Home / 2,125.40-2,932.32-1,328.18

Finding the Fourth Proportional to 2,125.40, 2,932.32 and 1,328.18

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Solution

The fourth proportional to 2,125.40, 2,932.32 and 1,328.18 is: 1,832.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.40 : 2,932.32 = 1,328.18 : x
  2. Step 2: Convert to fraction form
    2,125.40/2,932.32 = 1,328.18/x
  3. Step 3: Cross multiply
    2,125.40x = 2,932.32 × 1,328.18
  4. Step 4: Simplify right side
    2,125.40x = 3,894,634.12
  5. Step 5: Solve for x
    x = 3,894,634.12/2,125.40
  6. Step 6: Final answer
    x = 1,832.43

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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.