Home / 3,972.80-5,483.28-2,401.76

Finding the Fourth Proportional to 3,972.80, 5,483.28 and 2,401.76

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Solution

The fourth proportional to 3,972.80, 5,483.28 and 2,401.76 is: 3,314.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.80 : 5,483.28 = 2,401.76 : x
  2. Step 2: Convert to fraction form
    3,972.80/5,483.28 = 2,401.76/x
  3. Step 3: Cross multiply
    3,972.80x = 5,483.28 × 2,401.76
  4. Step 4: Simplify right side
    3,972.80x = 13,169,522.57
  5. Step 5: Solve for x
    x = 13,169,522.57/3,972.80
  6. Step 6: Final answer
    x = 3,314.92

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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.