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Finding the Fourth Proportional to 1,700.76, 2,346.98 and 954.78

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Solution

The fourth proportional to 1,700.76, 2,346.98 and 954.78 is: 1,317.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,700.76 : 2,346.98 = 954.78 : x
  2. Step 2: Convert to fraction form
    1,700.76/2,346.98 = 954.78/x
  3. Step 3: Cross multiply
    1,700.76x = 2,346.98 × 954.78
  4. Step 4: Simplify right side
    1,700.76x = 2,240,849.56
  5. Step 5: Solve for x
    x = 2,240,849.56/1,700.76
  6. Step 6: Final answer
    x = 1,317.56

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Double scale
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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.