Home / 2,478.19-3,717.28-998.08

Finding the Fourth Proportional to 2,478.19, 3,717.28 and 998.08

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Solution

The fourth proportional to 2,478.19, 3,717.28 and 998.08 is: 1,497.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.19 : 3,717.28 = 998.08 : x
  2. Step 2: Convert to fraction form
    2,478.19/3,717.28 = 998.08/x
  3. Step 3: Cross multiply
    2,478.19x = 3,717.28 × 998.08
  4. Step 4: Simplify right side
    2,478.19x = 3,710,142.82
  5. Step 5: Solve for x
    x = 3,710,142.82/2,478.19
  6. Step 6: Final answer
    x = 1,497.12

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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.