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Finding the Fourth Proportional to 7,063.68, 9,748.71 and 3,920.07

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Solution

The fourth proportional to 7,063.68, 9,748.71 and 3,920.07 is: 5,410.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,063.68 : 9,748.71 = 3,920.07 : x
  2. Step 2: Convert to fraction form
    7,063.68/9,748.71 = 3,920.07/x
  3. Step 3: Cross multiply
    7,063.68x = 9,748.71 × 3,920.07
  4. Step 4: Simplify right side
    7,063.68x = 38,215,625.61
  5. Step 5: Solve for x
    x = 38,215,625.61/7,063.68
  6. Step 6: Final answer
    x = 5,410.16

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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.