Home / 3,987.50-5,981.26-1,648.84

Finding the Fourth Proportional to 3,987.50, 5,981.26 and 1,648.84

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Solution

The fourth proportional to 3,987.50, 5,981.26 and 1,648.84 is: 2,473.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.50 : 5,981.26 = 1,648.84 : x
  2. Step 2: Convert to fraction form
    3,987.50/5,981.26 = 1,648.84/x
  3. Step 3: Cross multiply
    3,987.50x = 5,981.26 × 1,648.84
  4. Step 4: Simplify right side
    3,987.50x = 9,862,140.74
  5. Step 5: Solve for x
    x = 9,862,140.74/3,987.50
  6. Step 6: Final answer
    x = 2,473.26

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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.