Home / 2,037.20-2,812.48-1,339.78

Finding the Fourth Proportional to 2,037.20, 2,812.48 and 1,339.78

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Solution

The fourth proportional to 2,037.20, 2,812.48 and 1,339.78 is: 1,849.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,037.20 : 2,812.48 = 1,339.78 : x
  2. Step 2: Convert to fraction form
    2,037.20/2,812.48 = 1,339.78/x
  3. Step 3: Cross multiply
    2,037.20x = 2,812.48 × 1,339.78
  4. Step 4: Simplify right side
    2,037.20x = 3,768,104.45
  5. Step 5: Solve for x
    x = 3,768,104.45/2,037.20
  6. Step 6: Final answer
    x = 1,849.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.