Home / 1,545.27-2,132.08-1,021.20

Finding the Fourth Proportional to 1,545.27, 2,132.08 and 1,021.20

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Solution

The fourth proportional to 1,545.27, 2,132.08 and 1,021.20 is: 1,409.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.27 : 2,132.08 = 1,021.20 : x
  2. Step 2: Convert to fraction form
    1,545.27/2,132.08 = 1,021.20/x
  3. Step 3: Cross multiply
    1,545.27x = 2,132.08 × 1,021.20
  4. Step 4: Simplify right side
    1,545.27x = 2,177,280.10
  5. Step 5: Solve for x
    x = 2,177,280.10/1,545.27
  6. Step 6: Final answer
    x = 1,409.00

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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.