Home / 3,382.40-5,070.36-1,431.92

Finding the Fourth Proportional to 3,382.40, 5,070.36 and 1,431.92

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Solution

The fourth proportional to 3,382.40, 5,070.36 and 1,431.92 is: 2,146.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,382.40 : 5,070.36 = 1,431.92 : x
  2. Step 2: Convert to fraction form
    3,382.40/5,070.36 = 1,431.92/x
  3. Step 3: Cross multiply
    3,382.40x = 5,070.36 × 1,431.92
  4. Step 4: Simplify right side
    3,382.40x = 7,260,349.89
  5. Step 5: Solve for x
    x = 7,260,349.89/3,382.40
  6. Step 6: Final answer
    x = 2,146.51

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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.