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Finding the Fourth Proportional to 2,854, 4,281.72 and 802

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Solution

The fourth proportional to 2,854, 4,281.72 and 802 is: 1,203.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854 : 4,281.72 = 802 : x
  2. Step 2: Convert to fraction form
    2,854/4,281.72 = 802/x
  3. Step 3: Cross multiply
    2,854x = 4,281.72 × 802
  4. Step 4: Simplify right side
    2,854x = 3,433,939.44
  5. Step 5: Solve for x
    x = 3,433,939.44/2,854
  6. Step 6: Final answer
    x = 1,203.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.