Home / 3,141.18-4,335.03-1,815.21

Finding the Fourth Proportional to 3,141.18, 4,335.03 and 1,815.21

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Solution

The fourth proportional to 3,141.18, 4,335.03 and 1,815.21 is: 2,505.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,141.18 : 4,335.03 = 1,815.21 : x
  2. Step 2: Convert to fraction form
    3,141.18/4,335.03 = 1,815.21/x
  3. Step 3: Cross multiply
    3,141.18x = 4,335.03 × 1,815.21
  4. Step 4: Simplify right side
    3,141.18x = 7,868,989.81
  5. Step 5: Solve for x
    x = 7,868,989.81/3,141.18
  6. Step 6: Final answer
    x = 2,505.11

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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.