Home / 2,079.78-3,117.44-1,037.72

Finding the Fourth Proportional to 2,079.78, 3,117.44 and 1,037.72

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Solution

The fourth proportional to 2,079.78, 3,117.44 and 1,037.72 is: 1,555.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.78 : 3,117.44 = 1,037.72 : x
  2. Step 2: Convert to fraction form
    2,079.78/3,117.44 = 1,037.72/x
  3. Step 3: Cross multiply
    2,079.78x = 3,117.44 × 1,037.72
  4. Step 4: Simplify right side
    2,079.78x = 3,235,029.84
  5. Step 5: Solve for x
    x = 3,235,029.84/2,079.78
  6. Step 6: Final answer
    x = 1,555.47

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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.