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Finding the Fourth Proportional to 3,207.28, 4,810.92 and 898.72

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Solution

The fourth proportional to 3,207.28, 4,810.92 and 898.72 is: 1,348.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,207.28 : 4,810.92 = 898.72 : x
  2. Step 2: Convert to fraction form
    3,207.28/4,810.92 = 898.72/x
  3. Step 3: Cross multiply
    3,207.28x = 4,810.92 × 898.72
  4. Step 4: Simplify right side
    3,207.28x = 4,323,670.02
  5. Step 5: Solve for x
    x = 4,323,670.02/3,207.28
  6. Step 6: Final answer
    x = 1,348.08

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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.