Home / 1,864.08-2,572.56-1,117.80

Finding the Fourth Proportional to 1,864.08, 2,572.56 and 1,117.80

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Solution

The fourth proportional to 1,864.08, 2,572.56 and 1,117.80 is: 1,542.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.08 : 2,572.56 = 1,117.80 : x
  2. Step 2: Convert to fraction form
    1,864.08/2,572.56 = 1,117.80/x
  3. Step 3: Cross multiply
    1,864.08x = 2,572.56 × 1,117.80
  4. Step 4: Simplify right side
    1,864.08x = 2,875,607.57
  5. Step 5: Solve for x
    x = 2,875,607.57/1,864.08
  6. Step 6: Final answer
    x = 1,542.64

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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.