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Finding the Fourth Proportional to 8,988.66, 13,482.72 and 3,790.80

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Solution

The fourth proportional to 8,988.66, 13,482.72 and 3,790.80 is: 5,686.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.66 : 13,482.72 = 3,790.80 : x
  2. Step 2: Convert to fraction form
    8,988.66/13,482.72 = 3,790.80/x
  3. Step 3: Cross multiply
    8,988.66x = 13,482.72 × 3,790.80
  4. Step 4: Simplify right side
    8,988.66x = 51,110,294.98
  5. Step 5: Solve for x
    x = 51,110,294.98/8,988.66
  6. Step 6: Final answer
    x = 5,686.09

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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.