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Finding the Fourth Proportional to 2,854.72, 4,281.62 and 906.48

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Solution

The fourth proportional to 2,854.72, 4,281.62 and 906.48 is: 1,359.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.72 : 4,281.62 = 906.48 : x
  2. Step 2: Convert to fraction form
    2,854.72/4,281.62 = 906.48/x
  3. Step 3: Cross multiply
    2,854.72x = 4,281.62 × 906.48
  4. Step 4: Simplify right side
    2,854.72x = 3,881,202.90
  5. Step 5: Solve for x
    x = 3,881,202.90/2,854.72
  6. Step 6: Final answer
    x = 1,359.57

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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.