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Finding the Fourth Proportional to 8,332.80, 12,492.96 and 2,782.92

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Solution

The fourth proportional to 8,332.80, 12,492.96 and 2,782.92 is: 4,172.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,332.80 : 12,492.96 = 2,782.92 : x
  2. Step 2: Convert to fraction form
    8,332.80/12,492.96 = 2,782.92/x
  3. Step 3: Cross multiply
    8,332.80x = 12,492.96 × 2,782.92
  4. Step 4: Simplify right side
    8,332.80x = 34,766,908.24
  5. Step 5: Solve for x
    x = 34,766,908.24/8,332.80
  6. Step 6: Final answer
    x = 4,172.30

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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.