Home / 8,780.64-12,114.12-5,194.86

Finding the Fourth Proportional to 8,780.64, 12,114.12 and 5,194.86

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Solution

The fourth proportional to 8,780.64, 12,114.12 and 5,194.86 is: 7,167.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.64 : 12,114.12 = 5,194.86 : x
  2. Step 2: Convert to fraction form
    8,780.64/12,114.12 = 5,194.86/x
  3. Step 3: Cross multiply
    8,780.64x = 12,114.12 × 5,194.86
  4. Step 4: Simplify right side
    8,780.64x = 62,931,157.42
  5. Step 5: Solve for x
    x = 62,931,157.42/8,780.64
  6. Step 6: Final answer
    x = 7,167.04

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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.