Home / 9,139.60-13,685.10-5,834.80

Finding the Fourth Proportional to 9,139.60, 13,685.10 and 5,834.80

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Solution

The fourth proportional to 9,139.60, 13,685.10 and 5,834.80 is: 8,736.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.60 : 13,685.10 = 5,834.80 : x
  2. Step 2: Convert to fraction form
    9,139.60/13,685.10 = 5,834.80/x
  3. Step 3: Cross multiply
    9,139.60x = 13,685.10 × 5,834.80
  4. Step 4: Simplify right side
    9,139.60x = 79,849,821.48
  5. Step 5: Solve for x
    x = 79,849,821.48/9,139.60
  6. Step 6: Final answer
    x = 8,736.69

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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.