Home / 3,839.40-5,298.01-2,160.42

Finding the Fourth Proportional to 3,839.40, 5,298.01 and 2,160.42

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Solution

The fourth proportional to 3,839.40, 5,298.01 and 2,160.42 is: 2,981.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.40 : 5,298.01 = 2,160.42 : x
  2. Step 2: Convert to fraction form
    3,839.40/5,298.01 = 2,160.42/x
  3. Step 3: Cross multiply
    3,839.40x = 5,298.01 × 2,160.42
  4. Step 4: Simplify right side
    3,839.40x = 11,445,931.30
  5. Step 5: Solve for x
    x = 11,445,931.30/3,839.40
  6. Step 6: Final answer
    x = 2,981.18

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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.