Home / 9,122.60-13,689.30-6,651.20

Finding the Fourth Proportional to 9,122.60, 13,689.30 and 6,651.20

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Solution

The fourth proportional to 9,122.60, 13,689.30 and 6,651.20 is: 9,980.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.60 : 13,689.30 = 6,651.20 : x
  2. Step 2: Convert to fraction form
    9,122.60/13,689.30 = 6,651.20/x
  3. Step 3: Cross multiply
    9,122.60x = 13,689.30 × 6,651.20
  4. Step 4: Simplify right side
    9,122.60x = 91,050,272.16
  5. Step 5: Solve for x
    x = 91,050,272.16/9,122.60
  6. Step 6: Final answer
    x = 9,980.74

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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.