Home / 3,130.12-4,319.60-1,732.88

Finding the Fourth Proportional to 3,130.12, 4,319.60 and 1,732.88

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Solution

The fourth proportional to 3,130.12, 4,319.60 and 1,732.88 is: 2,391.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.12 : 4,319.60 = 1,732.88 : x
  2. Step 2: Convert to fraction form
    3,130.12/4,319.60 = 1,732.88/x
  3. Step 3: Cross multiply
    3,130.12x = 4,319.60 × 1,732.88
  4. Step 4: Simplify right side
    3,130.12x = 7,485,348.45
  5. Step 5: Solve for x
    x = 7,485,348.45/3,130.12
  6. Step 6: Final answer
    x = 2,391.39

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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.