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Finding the Fourth Proportional to 7,335.68, 10,978.81 and 6,728.72

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Solution

The fourth proportional to 7,335.68, 10,978.81 and 6,728.72 is: 10,070.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,335.68 : 10,978.81 = 6,728.72 : x
  2. Step 2: Convert to fraction form
    7,335.68/10,978.81 = 6,728.72/x
  3. Step 3: Cross multiply
    7,335.68x = 10,978.81 × 6,728.72
  4. Step 4: Simplify right side
    7,335.68x = 73,873,266.71
  5. Step 5: Solve for x
    x = 73,873,266.71/7,335.68
  6. Step 6: Final answer
    x = 10,070.41

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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.