Home / 4,987.34-7,482.54-2,520.80

Finding the Fourth Proportional to 4,987.34, 7,482.54 and 2,520.80

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Solution

The fourth proportional to 4,987.34, 7,482.54 and 2,520.80 is: 3,781.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.34 : 7,482.54 = 2,520.80 : x
  2. Step 2: Convert to fraction form
    4,987.34/7,482.54 = 2,520.80/x
  3. Step 3: Cross multiply
    4,987.34x = 7,482.54 × 2,520.80
  4. Step 4: Simplify right side
    4,987.34x = 18,861,986.83
  5. Step 5: Solve for x
    x = 18,861,986.83/4,987.34
  6. Step 6: Final answer
    x = 3,781.97

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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.