Home / 1,292.28-1,941.80-707.66

Finding the Fourth Proportional to 1,292.28, 1,941.80 and 707.66

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Solution

The fourth proportional to 1,292.28, 1,941.80 and 707.66 is: 1,063.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292.28 : 1,941.80 = 707.66 : x
  2. Step 2: Convert to fraction form
    1,292.28/1,941.80 = 707.66/x
  3. Step 3: Cross multiply
    1,292.28x = 1,941.80 × 707.66
  4. Step 4: Simplify right side
    1,292.28x = 1,374,134.19
  5. Step 5: Solve for x
    x = 1,374,134.19/1,292.28
  6. Step 6: Final answer
    x = 1,063.34

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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.