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Finding the Fourth Proportional to 7,069.77, 10,604.81 and 2,139.41

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Solution

The fourth proportional to 7,069.77, 10,604.81 and 2,139.41 is: 3,209.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,069.77 : 10,604.81 = 2,139.41 : x
  2. Step 2: Convert to fraction form
    7,069.77/10,604.81 = 2,139.41/x
  3. Step 3: Cross multiply
    7,069.77x = 10,604.81 × 2,139.41
  4. Step 4: Simplify right side
    7,069.77x = 22,687,988.89
  5. Step 5: Solve for x
    x = 22,687,988.89/7,069.77
  6. Step 6: Final answer
    x = 3,209.15

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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.