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Finding the Fourth Proportional to 2,805.78, 4,208.91 and 958.17

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Solution

The fourth proportional to 2,805.78, 4,208.91 and 958.17 is: 1,437.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.78 : 4,208.91 = 958.17 : x
  2. Step 2: Convert to fraction form
    2,805.78/4,208.91 = 958.17/x
  3. Step 3: Cross multiply
    2,805.78x = 4,208.91 × 958.17
  4. Step 4: Simplify right side
    2,805.78x = 4,032,851.29
  5. Step 5: Solve for x
    x = 4,032,851.29/2,805.78
  6. Step 6: Final answer
    x = 1,437.34

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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.