Home / 3,129.88-4,319.23-1,732.64

Finding the Fourth Proportional to 3,129.88, 4,319.23 and 1,732.64

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Solution

The fourth proportional to 3,129.88, 4,319.23 and 1,732.64 is: 2,391.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.88 : 4,319.23 = 1,732.64 : x
  2. Step 2: Convert to fraction form
    3,129.88/4,319.23 = 1,732.64/x
  3. Step 3: Cross multiply
    3,129.88x = 4,319.23 × 1,732.64
  4. Step 4: Simplify right side
    3,129.88x = 7,483,670.67
  5. Step 5: Solve for x
    x = 7,483,670.67/3,129.88
  6. Step 6: Final answer
    x = 2,391.04

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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.