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Finding the Fourth Proportional to 7,874.64, 11,779.08 and 5,534.48

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Solution

The fourth proportional to 7,874.64, 11,779.08 and 5,534.48 is: 8,278.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874.64 : 11,779.08 = 5,534.48 : x
  2. Step 2: Convert to fraction form
    7,874.64/11,779.08 = 5,534.48/x
  3. Step 3: Cross multiply
    7,874.64x = 11,779.08 × 5,534.48
  4. Step 4: Simplify right side
    7,874.64x = 65,191,082.68
  5. Step 5: Solve for x
    x = 65,191,082.68/7,874.64
  6. Step 6: Final answer
    x = 8,278.61

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1.5x scale

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.