Home / 2,165.81-3,253.92-1,387.33

Finding the Fourth Proportional to 2,165.81, 3,253.92 and 1,387.33

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Solution

The fourth proportional to 2,165.81, 3,253.92 and 1,387.33 is: 2,084.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.81 : 3,253.92 = 1,387.33 : x
  2. Step 2: Convert to fraction form
    2,165.81/3,253.92 = 1,387.33/x
  3. Step 3: Cross multiply
    2,165.81x = 3,253.92 × 1,387.33
  4. Step 4: Simplify right side
    2,165.81x = 4,514,244.56
  5. Step 5: Solve for x
    x = 4,514,244.56/2,165.81
  6. Step 6: Final answer
    x = 2,084.32

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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.