Home / 4,987.20-7,480.87-2,389.53

Finding the Fourth Proportional to 4,987.20, 7,480.87 and 2,389.53

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Solution

The fourth proportional to 4,987.20, 7,480.87 and 2,389.53 is: 3,584.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.20 : 7,480.87 = 2,389.53 : x
  2. Step 2: Convert to fraction form
    4,987.20/7,480.87 = 2,389.53/x
  3. Step 3: Cross multiply
    4,987.20x = 7,480.87 × 2,389.53
  4. Step 4: Simplify right side
    4,987.20x = 17,875,751.34
  5. Step 5: Solve for x
    x = 17,875,751.34/4,987.20
  6. Step 6: Final answer
    x = 3,584.33

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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.