Home / 1,877.55-2,815.99-707.66

Finding the Fourth Proportional to 1,877.55, 2,815.99 and 707.66

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Solution

The fourth proportional to 1,877.55, 2,815.99 and 707.66 is: 1,061.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.55 : 2,815.99 = 707.66 : x
  2. Step 2: Convert to fraction form
    1,877.55/2,815.99 = 707.66/x
  3. Step 3: Cross multiply
    1,877.55x = 2,815.99 × 707.66
  4. Step 4: Simplify right side
    1,877.55x = 1,992,768.10
  5. Step 5: Solve for x
    x = 1,992,768.10/1,877.55
  6. Step 6: Final answer
    x = 1,061.36

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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.