Home / 8,475.19-12,720.65-6,105.71

Finding the Fourth Proportional to 8,475.19, 12,720.65 and 6,105.71

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Solution

The fourth proportional to 8,475.19, 12,720.65 and 6,105.71 is: 9,164.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,475.19 : 12,720.65 = 6,105.71 : x
  2. Step 2: Convert to fraction form
    8,475.19/12,720.65 = 6,105.71/x
  3. Step 3: Cross multiply
    8,475.19x = 12,720.65 × 6,105.71
  4. Step 4: Simplify right side
    8,475.19x = 77,668,601.18
  5. Step 5: Solve for x
    x = 77,668,601.18/8,475.19
  6. Step 6: Final answer
    x = 9,164.23

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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.