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Finding the Fourth Proportional to 1,630.96, 2,250.55 and 958.76

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Solution

The fourth proportional to 1,630.96, 2,250.55 and 958.76 is: 1,322.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,630.96 : 2,250.55 = 958.76 : x
  2. Step 2: Convert to fraction form
    1,630.96/2,250.55 = 958.76/x
  3. Step 3: Cross multiply
    1,630.96x = 2,250.55 × 958.76
  4. Step 4: Simplify right side
    1,630.96x = 2,157,732.52
  5. Step 5: Solve for x
    x = 2,157,732.52/1,630.96
  6. Step 6: Final answer
    x = 1,322.99

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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.