Home / 2,037.52-2,811.76-1,290.68

Finding the Fourth Proportional to 2,037.52, 2,811.76 and 1,290.68

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Solution

The fourth proportional to 2,037.52, 2,811.76 and 1,290.68 is: 1,781.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,037.52 : 2,811.76 = 1,290.68 : x
  2. Step 2: Convert to fraction form
    2,037.52/2,811.76 = 1,290.68/x
  3. Step 3: Cross multiply
    2,037.52x = 2,811.76 × 1,290.68
  4. Step 4: Simplify right side
    2,037.52x = 3,629,082.40
  5. Step 5: Solve for x
    x = 3,629,082.40/2,037.52
  6. Step 6: Final answer
    x = 1,781.13

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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.