Home / 1,187.20-1,781.56-537.94

Finding the Fourth Proportional to 1,187.20, 1,781.56 and 537.94

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Solution

The fourth proportional to 1,187.20, 1,781.56 and 537.94 is: 807.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187.20 : 1,781.56 = 537.94 : x
  2. Step 2: Convert to fraction form
    1,187.20/1,781.56 = 537.94/x
  3. Step 3: Cross multiply
    1,187.20x = 1,781.56 × 537.94
  4. Step 4: Simplify right side
    1,187.20x = 958,372.39
  5. Step 5: Solve for x
    x = 958,372.39/1,187.20
  6. Step 6: Final answer
    x = 807.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.