Home / 7,687.80-11,531.70-4,577.40

Finding the Fourth Proportional to 7,687.80, 11,531.70 and 4,577.40

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Solution

The fourth proportional to 7,687.80, 11,531.70 and 4,577.40 is: 6,866.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,687.80 : 11,531.70 = 4,577.40 : x
  2. Step 2: Convert to fraction form
    7,687.80/11,531.70 = 4,577.40/x
  3. Step 3: Cross multiply
    7,687.80x = 11,531.70 × 4,577.40
  4. Step 4: Simplify right side
    7,687.80x = 52,785,203.58
  5. Step 5: Solve for x
    x = 52,785,203.58/7,687.80
  6. Step 6: Final answer
    x = 6,866.10

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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.