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Finding the Fourth Proportional to 1,615.17, 2,229.03 and 951.87

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Solution

The fourth proportional to 1,615.17, 2,229.03 and 951.87 is: 1,313.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.17 : 2,229.03 = 951.87 : x
  2. Step 2: Convert to fraction form
    1,615.17/2,229.03 = 951.87/x
  3. Step 3: Cross multiply
    1,615.17x = 2,229.03 × 951.87
  4. Step 4: Simplify right side
    1,615.17x = 2,121,746.79
  5. Step 5: Solve for x
    x = 2,121,746.79/1,615.17
  6. Step 6: Final answer
    x = 1,313.64

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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.