Home / 3,279.28-4,526.16-2,160.32

Finding the Fourth Proportional to 3,279.28, 4,526.16 and 2,160.32

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Solution

The fourth proportional to 3,279.28, 4,526.16 and 2,160.32 is: 2,981.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.28 : 4,526.16 = 2,160.32 : x
  2. Step 2: Convert to fraction form
    3,279.28/4,526.16 = 2,160.32/x
  3. Step 3: Cross multiply
    3,279.28x = 4,526.16 × 2,160.32
  4. Step 4: Simplify right side
    3,279.28x = 9,777,953.97
  5. Step 5: Solve for x
    x = 9,777,953.97/3,279.28
  6. Step 6: Final answer
    x = 2,981.74

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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.