Home / 1,728.40-2,601.94-1,575.32

Finding the Fourth Proportional to 1,728.40, 2,601.94 and 1,575.32

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Solution

The fourth proportional to 1,728.40, 2,601.94 and 1,575.32 is: 2,371.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.40 : 2,601.94 = 1,575.32 : x
  2. Step 2: Convert to fraction form
    1,728.40/2,601.94 = 1,575.32/x
  3. Step 3: Cross multiply
    1,728.40x = 2,601.94 × 1,575.32
  4. Step 4: Simplify right side
    1,728.40x = 4,098,888.12
  5. Step 5: Solve for x
    x = 4,098,888.12/1,728.40
  6. Step 6: Final answer
    x = 2,371.49

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.