Home / 3,112.38-4,295.08-1,715.12

Finding the Fourth Proportional to 3,112.38, 4,295.08 and 1,715.12

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Solution

The fourth proportional to 3,112.38, 4,295.08 and 1,715.12 is: 2,366.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.38 : 4,295.08 = 1,715.12 : x
  2. Step 2: Convert to fraction form
    3,112.38/4,295.08 = 1,715.12/x
  3. Step 3: Cross multiply
    3,112.38x = 4,295.08 × 1,715.12
  4. Step 4: Simplify right side
    3,112.38x = 7,366,577.61
  5. Step 5: Solve for x
    x = 7,366,577.61/3,112.38
  6. Step 6: Final answer
    x = 2,366.86

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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.