Home / 4,116.81-5,671.18-3,121.12

Finding the Fourth Proportional to 4,116.81, 5,671.18 and 3,121.12

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Solution

The fourth proportional to 4,116.81, 5,671.18 and 3,121.12 is: 4,299.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,116.81 : 5,671.18 = 3,121.12 : x
  2. Step 2: Convert to fraction form
    4,116.81/5,671.18 = 3,121.12/x
  3. Step 3: Cross multiply
    4,116.81x = 5,671.18 × 3,121.12
  4. Step 4: Simplify right side
    4,116.81x = 17,700,433.32
  5. Step 5: Solve for x
    x = 17,700,433.32/4,116.81
  6. Step 6: Final answer
    x = 4,299.55

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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.