Home / 1,358.16-2,037.78-628.08

Finding the Fourth Proportional to 1,358.16, 2,037.78 and 628.08

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Solution

The fourth proportional to 1,358.16, 2,037.78 and 628.08 is: 942.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.16 : 2,037.78 = 628.08 : x
  2. Step 2: Convert to fraction form
    1,358.16/2,037.78 = 628.08/x
  3. Step 3: Cross multiply
    1,358.16x = 2,037.78 × 628.08
  4. Step 4: Simplify right side
    1,358.16x = 1,279,888.86
  5. Step 5: Solve for x
    x = 1,279,888.86/1,358.16
  6. Step 6: Final answer
    x = 942.37

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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.