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Finding the Fourth Proportional to 3,972.76, 5,483.47 and 2,479.77

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Solution

The fourth proportional to 3,972.76, 5,483.47 and 2,479.77 is: 3,422.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.76 : 5,483.47 = 2,479.77 : x
  2. Step 2: Convert to fraction form
    3,972.76/5,483.47 = 2,479.77/x
  3. Step 3: Cross multiply
    3,972.76x = 5,483.47 × 2,479.77
  4. Step 4: Simplify right side
    3,972.76x = 13,597,744.40
  5. Step 5: Solve for x
    x = 13,597,744.40/3,972.76
  6. Step 6: Final answer
    x = 3,422.74

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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.