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Finding the Fourth Proportional to 7,068.40, 9,753.98 and 3,924.40

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Solution

The fourth proportional to 7,068.40, 9,753.98 and 3,924.40 is: 5,415.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,068.40 : 9,753.98 = 3,924.40 : x
  2. Step 2: Convert to fraction form
    7,068.40/9,753.98 = 3,924.40/x
  3. Step 3: Cross multiply
    7,068.40x = 9,753.98 × 3,924.40
  4. Step 4: Simplify right side
    7,068.40x = 38,278,519.11
  5. Step 5: Solve for x
    x = 38,278,519.11/7,068.40
  6. Step 6: Final answer
    x = 5,415.44

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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.