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Finding the Fourth Proportional to 8,757.95, 12,085.90 and 4,779.23

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Solution

The fourth proportional to 8,757.95, 12,085.90 and 4,779.23 is: 6,595.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.95 : 12,085.90 = 4,779.23 : x
  2. Step 2: Convert to fraction form
    8,757.95/12,085.90 = 4,779.23/x
  3. Step 3: Cross multiply
    8,757.95x = 12,085.90 × 4,779.23
  4. Step 4: Simplify right side
    8,757.95x = 57,761,223.48
  5. Step 5: Solve for x
    x = 57,761,223.48/8,757.95
  6. Step 6: Final answer
    x = 6,595.29

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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.