Home / 1,631.13-2,251.34-968.36

Finding the Fourth Proportional to 1,631.13, 2,251.34 and 968.36

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Solution

The fourth proportional to 1,631.13, 2,251.34 and 968.36 is: 1,336.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.13 : 2,251.34 = 968.36 : x
  2. Step 2: Convert to fraction form
    1,631.13/2,251.34 = 968.36/x
  3. Step 3: Cross multiply
    1,631.13x = 2,251.34 × 968.36
  4. Step 4: Simplify right side
    1,631.13x = 2,180,119.58
  5. Step 5: Solve for x
    x = 2,180,119.58/1,631.13
  6. Step 6: Final answer
    x = 1,336.57

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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.