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Finding the Fourth Proportional to 2,836.40, 4,234.40 and 2,398.88

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Solution

The fourth proportional to 2,836.40, 4,234.40 and 2,398.88 is: 3,581.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.40 : 4,234.40 = 2,398.88 : x
  2. Step 2: Convert to fraction form
    2,836.40/4,234.40 = 2,398.88/x
  3. Step 3: Cross multiply
    2,836.40x = 4,234.40 × 2,398.88
  4. Step 4: Simplify right side
    2,836.40x = 10,157,817.47
  5. Step 5: Solve for x
    x = 10,157,817.47/2,836.40
  6. Step 6: Final answer
    x = 3,581.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.