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Finding the Fourth Proportional to 7,009.97, 10,520.19 and 2,851.47

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Solution

The fourth proportional to 7,009.97, 10,520.19 and 2,851.47 is: 4,279.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,009.97 : 10,520.19 = 2,851.47 : x
  2. Step 2: Convert to fraction form
    7,009.97/10,520.19 = 2,851.47/x
  3. Step 3: Cross multiply
    7,009.97x = 10,520.19 × 2,851.47
  4. Step 4: Simplify right side
    7,009.97x = 29,998,006.18
  5. Step 5: Solve for x
    x = 29,998,006.18/7,009.97
  6. Step 6: Final answer
    x = 4,279.34

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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.