Home / 3,211.47-4,432.82-2,977.74

Finding the Fourth Proportional to 3,211.47, 4,432.82 and 2,977.74

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Solution

The fourth proportional to 3,211.47, 4,432.82 and 2,977.74 is: 4,110.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.47 : 4,432.82 = 2,977.74 : x
  2. Step 2: Convert to fraction form
    3,211.47/4,432.82 = 2,977.74/x
  3. Step 3: Cross multiply
    3,211.47x = 4,432.82 × 2,977.74
  4. Step 4: Simplify right side
    3,211.47x = 13,199,785.43
  5. Step 5: Solve for x
    x = 13,199,785.43/3,211.47
  6. Step 6: Final answer
    x = 4,110.20

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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.