Home / 2,520.38-3,478.12-1,416.38

Finding the Fourth Proportional to 2,520.38, 3,478.12 and 1,416.38

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Solution

The fourth proportional to 2,520.38, 3,478.12 and 1,416.38 is: 1,954.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.38 : 3,478.12 = 1,416.38 : x
  2. Step 2: Convert to fraction form
    2,520.38/3,478.12 = 1,416.38/x
  3. Step 3: Cross multiply
    2,520.38x = 3,478.12 × 1,416.38
  4. Step 4: Simplify right side
    2,520.38x = 4,926,318.67
  5. Step 5: Solve for x
    x = 4,926,318.67/2,520.38
  6. Step 6: Final answer
    x = 1,954.60

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Half scale
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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.