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Finding the Fourth Proportional to 8,808.75, 12,157.16 and 5,082.75

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Solution

The fourth proportional to 8,808.75, 12,157.16 and 5,082.75 is: 7,014.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,808.75 : 12,157.16 = 5,082.75 : x
  2. Step 2: Convert to fraction form
    8,808.75/12,157.16 = 5,082.75/x
  3. Step 3: Cross multiply
    8,808.75x = 12,157.16 × 5,082.75
  4. Step 4: Simplify right side
    8,808.75x = 61,791,779.58
  5. Step 5: Solve for x
    x = 61,791,779.58/8,808.75
  6. Step 6: Final answer
    x = 7,014.82

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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.