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Finding the Fourth Proportional to 8,990.80, 13,482.78 and 2,748.91

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Solution

The fourth proportional to 8,990.80, 13,482.78 and 2,748.91 is: 4,122.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.80 : 13,482.78 = 2,748.91 : x
  2. Step 2: Convert to fraction form
    8,990.80/13,482.78 = 2,748.91/x
  3. Step 3: Cross multiply
    8,990.80x = 13,482.78 × 2,748.91
  4. Step 4: Simplify right side
    8,990.80x = 37,062,948.77
  5. Step 5: Solve for x
    x = 37,062,948.77/8,990.80
  6. Step 6: Final answer
    x = 4,122.32

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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.