Home / 3,972.95-5,480.95-2,400.13

Finding the Fourth Proportional to 3,972.95, 5,480.95 and 2,400.13

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Solution

The fourth proportional to 3,972.95, 5,480.95 and 2,400.13 is: 3,311.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.95 : 5,480.95 = 2,400.13 : x
  2. Step 2: Convert to fraction form
    3,972.95/5,480.95 = 2,400.13/x
  3. Step 3: Cross multiply
    3,972.95x = 5,480.95 × 2,400.13
  4. Step 4: Simplify right side
    3,972.95x = 13,154,953.12
  5. Step 5: Solve for x
    x = 13,154,953.12/3,972.95
  6. Step 6: Final answer
    x = 3,311.13

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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.