Home / 7,714.85-11,572.31-1,871.46

Finding the Fourth Proportional to 7,714.85, 11,572.31 and 1,871.46

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Solution

The fourth proportional to 7,714.85, 11,572.31 and 1,871.46 is: 2,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,714.85 : 11,572.31 = 1,871.46 : x
  2. Step 2: Convert to fraction form
    7,714.85/11,572.31 = 1,871.46/x
  3. Step 3: Cross multiply
    7,714.85x = 11,572.31 × 1,871.46
  4. Step 4: Simplify right side
    7,714.85x = 21,657,119.95
  5. Step 5: Solve for x
    x = 21,657,119.95/7,714.85
  6. Step 6: Final answer
    x = 2,807.20

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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.