Home / 1,877.13-2,816.19-707.15

Finding the Fourth Proportional to 1,877.13, 2,816.19 and 707.15

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Solution

The fourth proportional to 1,877.13, 2,816.19 and 707.15 is: 1,060.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.13 : 2,816.19 = 707.15 : x
  2. Step 2: Convert to fraction form
    1,877.13/2,816.19 = 707.15/x
  3. Step 3: Cross multiply
    1,877.13x = 2,816.19 × 707.15
  4. Step 4: Simplify right side
    1,877.13x = 1,991,451.14
  5. Step 5: Solve for x
    x = 1,991,451.14/1,877.13
  6. Step 6: Final answer
    x = 1,060.90

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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.