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Finding the Fourth Proportional to 2,805.16, 4,207.72 and 956.46

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Solution

The fourth proportional to 2,805.16, 4,207.72 and 956.46 is: 1,434.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.16 : 4,207.72 = 956.46 : x
  2. Step 2: Convert to fraction form
    2,805.16/4,207.72 = 956.46/x
  3. Step 3: Cross multiply
    2,805.16x = 4,207.72 × 956.46
  4. Step 4: Simplify right side
    2,805.16x = 4,024,515.87
  5. Step 5: Solve for x
    x = 4,024,515.87/2,805.16
  6. Step 6: Final answer
    x = 1,434.68

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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.