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Finding the Fourth Proportional to 2,872.40, 4,309.08 and 1,023.08

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Solution

The fourth proportional to 2,872.40, 4,309.08 and 1,023.08 is: 1,534.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.40 : 4,309.08 = 1,023.08 : x
  2. Step 2: Convert to fraction form
    2,872.40/4,309.08 = 1,023.08/x
  3. Step 3: Cross multiply
    2,872.40x = 4,309.08 × 1,023.08
  4. Step 4: Simplify right side
    2,872.40x = 4,408,533.57
  5. Step 5: Solve for x
    x = 4,408,533.57/2,872.40
  6. Step 6: Final answer
    x = 1,534.79

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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.