Home / 1,554.76-2,143.95-1,200.74

Finding the Fourth Proportional to 1,554.76, 2,143.95 and 1,200.74

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Solution

The fourth proportional to 1,554.76, 2,143.95 and 1,200.74 is: 1,655.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554.76 : 2,143.95 = 1,200.74 : x
  2. Step 2: Convert to fraction form
    1,554.76/2,143.95 = 1,200.74/x
  3. Step 3: Cross multiply
    1,554.76x = 2,143.95 × 1,200.74
  4. Step 4: Simplify right side
    1,554.76x = 2,574,330.11
  5. Step 5: Solve for x
    x = 2,574,330.11/1,554.76
  6. Step 6: Final answer
    x = 1,655.77

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Half scale
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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.