Home / 9,340.60-12,889.90-5,148.80

Finding the Fourth Proportional to 9,340.60, 12,889.90 and 5,148.80

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Solution

The fourth proportional to 9,340.60, 12,889.90 and 5,148.80 is: 7,105.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,340.60 : 12,889.90 = 5,148.80 : x
  2. Step 2: Convert to fraction form
    9,340.60/12,889.90 = 5,148.80/x
  3. Step 3: Cross multiply
    9,340.60x = 12,889.90 × 5,148.80
  4. Step 4: Simplify right side
    9,340.60x = 66,367,517.12
  5. Step 5: Solve for x
    x = 66,367,517.12/9,340.60
  6. Step 6: Final answer
    x = 7,105.27

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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.