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Finding the Fourth Proportional to 8,757.90, 12,086.08 and 4,779.18

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Solution

The fourth proportional to 8,757.90, 12,086.08 and 4,779.18 is: 6,595.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.90 : 12,086.08 = 4,779.18 : x
  2. Step 2: Convert to fraction form
    8,757.90/12,086.08 = 4,779.18/x
  3. Step 3: Cross multiply
    8,757.90x = 12,086.08 × 4,779.18
  4. Step 4: Simplify right side
    8,757.90x = 57,761,539.87
  5. Step 5: Solve for x
    x = 57,761,539.87/8,757.90
  6. Step 6: Final answer
    x = 6,595.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.