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Finding the Fourth Proportional to 1,955.52, 2,698.36 and 1,256.76

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Solution

The fourth proportional to 1,955.52, 2,698.36 and 1,256.76 is: 1,734.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.52 : 2,698.36 = 1,256.76 : x
  2. Step 2: Convert to fraction form
    1,955.52/2,698.36 = 1,256.76/x
  3. Step 3: Cross multiply
    1,955.52x = 2,698.36 × 1,256.76
  4. Step 4: Simplify right side
    1,955.52x = 3,391,190.91
  5. Step 5: Solve for x
    x = 3,391,190.91/1,955.52
  6. Step 6: Final answer
    x = 1,734.16

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,956.52, 2,699.74 and 1,257.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.