Home / 9,143.15-12,604.61-6,489.59

Finding the Fourth Proportional to 9,143.15, 12,604.61 and 6,489.59

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Solution

The fourth proportional to 9,143.15, 12,604.61 and 6,489.59 is: 8,946.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,143.15 : 12,604.61 = 6,489.59 : x
  2. Step 2: Convert to fraction form
    9,143.15/12,604.61 = 6,489.59/x
  3. Step 3: Cross multiply
    9,143.15x = 12,604.61 × 6,489.59
  4. Step 4: Simplify right side
    9,143.15x = 81,798,704.21
  5. Step 5: Solve for x
    x = 81,798,704.21/9,143.15
  6. Step 6: Final answer
    x = 8,946.45

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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.