Home / 2,487.48-3,433.14-1,440.15

Finding the Fourth Proportional to 2,487.48, 3,433.14 and 1,440.15

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Solution

The fourth proportional to 2,487.48, 3,433.14 and 1,440.15 is: 1,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.48 : 3,433.14 = 1,440.15 : x
  2. Step 2: Convert to fraction form
    2,487.48/3,433.14 = 1,440.15/x
  3. Step 3: Cross multiply
    2,487.48x = 3,433.14 × 1,440.15
  4. Step 4: Simplify right side
    2,487.48x = 4,944,236.57
  5. Step 5: Solve for x
    x = 4,944,236.57/2,487.48
  6. Step 6: Final answer
    x = 1,987.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.