Home / 3,146.84-4,343.28-2,154.86

Finding the Fourth Proportional to 3,146.84, 4,343.28 and 2,154.86

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Solution

The fourth proportional to 3,146.84, 4,343.28 and 2,154.86 is: 2,974.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146.84 : 4,343.28 = 2,154.86 : x
  2. Step 2: Convert to fraction form
    3,146.84/4,343.28 = 2,154.86/x
  3. Step 3: Cross multiply
    3,146.84x = 4,343.28 × 2,154.86
  4. Step 4: Simplify right side
    3,146.84x = 9,359,160.34
  5. Step 5: Solve for x
    x = 9,359,160.34/3,146.84
  6. Step 6: Final answer
    x = 2,974.15

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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.