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Finding the Fourth Proportional to 9,272.10, 13,912.20 and 4,339.20

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Solution

The fourth proportional to 9,272.10, 13,912.20 and 4,339.20 is: 6,510.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,272.10 : 13,912.20 = 4,339.20 : x
  2. Step 2: Convert to fraction form
    9,272.10/13,912.20 = 4,339.20/x
  3. Step 3: Cross multiply
    9,272.10x = 13,912.20 × 4,339.20
  4. Step 4: Simplify right side
    9,272.10x = 60,367,818.24
  5. Step 5: Solve for x
    x = 60,367,818.24/9,272.10
  6. Step 6: Final answer
    x = 6,510.70

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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.