Home / 8,906.13-12,296.05-5,720.71

Finding the Fourth Proportional to 8,906.13, 12,296.05 and 5,720.71

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Solution

The fourth proportional to 8,906.13, 12,296.05 and 5,720.71 is: 7,898.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.13 : 12,296.05 = 5,720.71 : x
  2. Step 2: Convert to fraction form
    8,906.13/12,296.05 = 5,720.71/x
  3. Step 3: Cross multiply
    8,906.13x = 12,296.05 × 5,720.71
  4. Step 4: Simplify right side
    8,906.13x = 70,342,136.20
  5. Step 5: Solve for x
    x = 70,342,136.20/8,906.13
  6. Step 6: Final answer
    x = 7,898.17

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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.