Home / 9,121.60-13,674.30-5,419.90

Finding the Fourth Proportional to 9,121.60, 13,674.30 and 5,419.90

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Solution

The fourth proportional to 9,121.60, 13,674.30 and 5,419.90 is: 8,125.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.60 : 13,674.30 = 5,419.90 : x
  2. Step 2: Convert to fraction form
    9,121.60/13,674.30 = 5,419.90/x
  3. Step 3: Cross multiply
    9,121.60x = 13,674.30 × 5,419.90
  4. Step 4: Simplify right side
    9,121.60x = 74,113,338.57
  5. Step 5: Solve for x
    x = 74,113,338.57/9,121.60
  6. Step 6: Final answer
    x = 8,125.04

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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.