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Finding the Fourth Proportional to 6,492.40, 9,731.40 and 3,572.80

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Solution

The fourth proportional to 6,492.40, 9,731.40 and 3,572.80 is: 5,355.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,492.40 : 9,731.40 = 3,572.80 : x
  2. Step 2: Convert to fraction form
    6,492.40/9,731.40 = 3,572.80/x
  3. Step 3: Cross multiply
    6,492.40x = 9,731.40 × 3,572.80
  4. Step 4: Simplify right side
    6,492.40x = 34,768,345.92
  5. Step 5: Solve for x
    x = 34,768,345.92/6,492.40
  6. Step 6: Final answer
    x = 5,355.24

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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.