Home / 2,431.60-3,648.96-1,278.16

Finding the Fourth Proportional to 2,431.60, 3,648.96 and 1,278.16

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Solution

The fourth proportional to 2,431.60, 3,648.96 and 1,278.16 is: 1,918.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.60 : 3,648.96 = 1,278.16 : x
  2. Step 2: Convert to fraction form
    2,431.60/3,648.96 = 1,278.16/x
  3. Step 3: Cross multiply
    2,431.60x = 3,648.96 × 1,278.16
  4. Step 4: Simplify right side
    2,431.60x = 4,663,954.71
  5. Step 5: Solve for x
    x = 4,663,954.71/2,431.60
  6. Step 6: Final answer
    x = 1,918.06

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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.