Home / 2,358.36-3,538.56-1,125.78

Finding the Fourth Proportional to 2,358.36, 3,538.56 and 1,125.78

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Solution

The fourth proportional to 2,358.36, 3,538.56 and 1,125.78 is: 1,689.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,358.36 : 3,538.56 = 1,125.78 : x
  2. Step 2: Convert to fraction form
    2,358.36/3,538.56 = 1,125.78/x
  3. Step 3: Cross multiply
    2,358.36x = 3,538.56 × 1,125.78
  4. Step 4: Simplify right side
    2,358.36x = 3,983,640.08
  5. Step 5: Solve for x
    x = 3,983,640.08/2,358.36
  6. Step 6: Final answer
    x = 1,689.16

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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.