Home / 3,141.62-4,335.40-1,815.32

Finding the Fourth Proportional to 3,141.62, 4,335.40 and 1,815.32

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Solution

The fourth proportional to 3,141.62, 4,335.40 and 1,815.32 is: 2,505.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,141.62 : 4,335.40 = 1,815.32 : x
  2. Step 2: Convert to fraction form
    3,141.62/4,335.40 = 1,815.32/x
  3. Step 3: Cross multiply
    3,141.62x = 4,335.40 × 1,815.32
  4. Step 4: Simplify right side
    3,141.62x = 7,870,138.33
  5. Step 5: Solve for x
    x = 7,870,138.33/3,141.62
  6. Step 6: Final answer
    x = 2,505.12

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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.