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Finding the Fourth Proportional to 9,386.80, 14,080.20 and 7,272.70

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Solution

The fourth proportional to 9,386.80, 14,080.20 and 7,272.70 is: 10,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,386.80 : 14,080.20 = 7,272.70 : x
  2. Step 2: Convert to fraction form
    9,386.80/14,080.20 = 7,272.70/x
  3. Step 3: Cross multiply
    9,386.80x = 14,080.20 × 7,272.70
  4. Step 4: Simplify right side
    9,386.80x = 102,401,070.54
  5. Step 5: Solve for x
    x = 102,401,070.54/9,386.80
  6. Step 6: Final answer
    x = 10,909.05

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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.