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Finding the Fourth Proportional to 7,079.80, 10,618.28 and 6,728.53

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Solution

The fourth proportional to 7,079.80, 10,618.28 and 6,728.53 is: 10,091.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.80 : 10,618.28 = 6,728.53 : x
  2. Step 2: Convert to fraction form
    7,079.80/10,618.28 = 6,728.53/x
  3. Step 3: Cross multiply
    7,079.80x = 10,618.28 × 6,728.53
  4. Step 4: Simplify right side
    7,079.80x = 71,445,415.53
  5. Step 5: Solve for x
    x = 71,445,415.53/7,079.80
  6. Step 6: Final answer
    x = 10,091.45

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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.