Home / 1,545.29-2,132.71-947.85

Finding the Fourth Proportional to 1,545.29, 2,132.71 and 947.85

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Solution

The fourth proportional to 1,545.29, 2,132.71 and 947.85 is: 1,308.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.29 : 2,132.71 = 947.85 : x
  2. Step 2: Convert to fraction form
    1,545.29/2,132.71 = 947.85/x
  3. Step 3: Cross multiply
    1,545.29x = 2,132.71 × 947.85
  4. Step 4: Simplify right side
    1,545.29x = 2,021,486.80
  5. Step 5: Solve for x
    x = 2,021,486.80/1,545.29
  6. Step 6: Final answer
    x = 1,308.16

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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.