Home / 1,187.16-1,781.44-537.89

Finding the Fourth Proportional to 1,187.16, 1,781.44 and 537.89

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Solution

The fourth proportional to 1,187.16, 1,781.44 and 537.89 is: 807.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187.16 : 1,781.44 = 537.89 : x
  2. Step 2: Convert to fraction form
    1,187.16/1,781.44 = 537.89/x
  3. Step 3: Cross multiply
    1,187.16x = 1,781.44 × 537.89
  4. Step 4: Simplify right side
    1,187.16x = 958,221.56
  5. Step 5: Solve for x
    x = 958,221.56/1,187.16
  6. Step 6: Final answer
    x = 807.16

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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.