Home / 2,631.36-3,948.12-1,591.32

Finding the Fourth Proportional to 2,631.36, 3,948.12 and 1,591.32

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Solution

The fourth proportional to 2,631.36, 3,948.12 and 1,591.32 is: 2,387.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.36 : 3,948.12 = 1,591.32 : x
  2. Step 2: Convert to fraction form
    2,631.36/3,948.12 = 1,591.32/x
  3. Step 3: Cross multiply
    2,631.36x = 3,948.12 × 1,591.32
  4. Step 4: Simplify right side
    2,631.36x = 6,282,722.32
  5. Step 5: Solve for x
    x = 6,282,722.32/2,631.36
  6. Step 6: Final answer
    x = 2,387.63

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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.