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Finding the Fourth Proportional to 6,492.70, 8,957.82 and 3,972.18

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Solution

The fourth proportional to 6,492.70, 8,957.82 and 3,972.18 is: 5,480.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,492.70 : 8,957.82 = 3,972.18 : x
  2. Step 2: Convert to fraction form
    6,492.70/8,957.82 = 3,972.18/x
  3. Step 3: Cross multiply
    6,492.70x = 8,957.82 × 3,972.18
  4. Step 4: Simplify right side
    6,492.70x = 35,582,052.32
  5. Step 5: Solve for x
    x = 35,582,052.32/6,492.70
  6. Step 6: Final answer
    x = 5,480.32

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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.