Home / 2,931.38-4,046.34-1,813.18

Finding the Fourth Proportional to 2,931.38, 4,046.34 and 1,813.18

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Solution

The fourth proportional to 2,931.38, 4,046.34 and 1,813.18 is: 2,502.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.38 : 4,046.34 = 1,813.18 : x
  2. Step 2: Convert to fraction form
    2,931.38/4,046.34 = 1,813.18/x
  3. Step 3: Cross multiply
    2,931.38x = 4,046.34 × 1,813.18
  4. Step 4: Simplify right side
    2,931.38x = 7,336,742.76
  5. Step 5: Solve for x
    x = 7,336,742.76/2,931.38
  6. Step 6: Final answer
    x = 2,502.83

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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.