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Finding the Fourth Proportional to 2,340.64, 3,508.08 and 1,040.64

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Solution

The fourth proportional to 2,340.64, 3,508.08 and 1,040.64 is: 1,559.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,340.64 : 3,508.08 = 1,040.64 : x
  2. Step 2: Convert to fraction form
    2,340.64/3,508.08 = 1,040.64/x
  3. Step 3: Cross multiply
    2,340.64x = 3,508.08 × 1,040.64
  4. Step 4: Simplify right side
    2,340.64x = 3,650,648.37
  5. Step 5: Solve for x
    x = 3,650,648.37/2,340.64
  6. Step 6: Final answer
    x = 1,559.68

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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.