Home / 1,631.10-2,446.61-398.51

Finding the Fourth Proportional to 1,631.10, 2,446.61 and 398.51

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Solution

The fourth proportional to 1,631.10, 2,446.61 and 398.51 is: 597.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.10 : 2,446.61 = 398.51 : x
  2. Step 2: Convert to fraction form
    1,631.10/2,446.61 = 398.51/x
  3. Step 3: Cross multiply
    1,631.10x = 2,446.61 × 398.51
  4. Step 4: Simplify right side
    1,631.10x = 974,984.33
  5. Step 5: Solve for x
    x = 974,984.33/1,631.10
  6. Step 6: Final answer
    x = 597.75

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.