Home / 3,781.32-5,671.98-1,316.76

Finding the Fourth Proportional to 3,781.32, 5,671.98 and 1,316.76

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Solution

The fourth proportional to 3,781.32, 5,671.98 and 1,316.76 is: 1,975.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.32 : 5,671.98 = 1,316.76 : x
  2. Step 2: Convert to fraction form
    3,781.32/5,671.98 = 1,316.76/x
  3. Step 3: Cross multiply
    3,781.32x = 5,671.98 × 1,316.76
  4. Step 4: Simplify right side
    3,781.32x = 7,468,636.38
  5. Step 5: Solve for x
    x = 7,468,636.38/3,781.32
  6. Step 6: Final answer
    x = 1,975.14

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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.