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Finding the Fourth Proportional to 7,338.60, 10,127.70 and 7,006.50

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Solution

The fourth proportional to 7,338.60, 10,127.70 and 7,006.50 is: 9,669.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338.60 : 10,127.70 = 7,006.50 : x
  2. Step 2: Convert to fraction form
    7,338.60/10,127.70 = 7,006.50/x
  3. Step 3: Cross multiply
    7,338.60x = 10,127.70 × 7,006.50
  4. Step 4: Simplify right side
    7,338.60x = 70,959,730.05
  5. Step 5: Solve for x
    x = 70,959,730.05/7,338.60
  6. Step 6: Final answer
    x = 9,669.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.