Home / 1,864.11-2,572.17-1,117.89

Finding the Fourth Proportional to 1,864.11, 2,572.17 and 1,117.89

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Solution

The fourth proportional to 1,864.11, 2,572.17 and 1,117.89 is: 1,542.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.11 : 2,572.17 = 1,117.89 : x
  2. Step 2: Convert to fraction form
    1,864.11/2,572.17 = 1,117.89/x
  3. Step 3: Cross multiply
    1,864.11x = 2,572.17 × 1,117.89
  4. Step 4: Simplify right side
    1,864.11x = 2,875,403.12
  5. Step 5: Solve for x
    x = 2,875,403.12/1,864.11
  6. Step 6: Final answer
    x = 1,542.51

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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.