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Finding the Fourth Proportional to 6,862.56, 9,510.18 and 6,731.28

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Solution

The fourth proportional to 6,862.56, 9,510.18 and 6,731.28 is: 9,328.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,862.56 : 9,510.18 = 6,731.28 : x
  2. Step 2: Convert to fraction form
    6,862.56/9,510.18 = 6,731.28/x
  3. Step 3: Cross multiply
    6,862.56x = 9,510.18 × 6,731.28
  4. Step 4: Simplify right side
    6,862.56x = 64,015,684.43
  5. Step 5: Solve for x
    x = 64,015,684.43/6,862.56
  6. Step 6: Final answer
    x = 9,328.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.