Home / 9,164.28-12,647.18-5,130.86

Finding the Fourth Proportional to 9,164.28, 12,647.18 and 5,130.86

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Solution

The fourth proportional to 9,164.28, 12,647.18 and 5,130.86 is: 7,080.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,164.28 : 12,647.18 = 5,130.86 : x
  2. Step 2: Convert to fraction form
    9,164.28/12,647.18 = 5,130.86/x
  3. Step 3: Cross multiply
    9,164.28x = 12,647.18 × 5,130.86
  4. Step 4: Simplify right side
    9,164.28x = 64,890,909.97
  5. Step 5: Solve for x
    x = 64,890,909.97/9,164.28
  6. Step 6: Final answer
    x = 7,080.85

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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.