Home / 3,123.07-4,309.68-2,240.35

Finding the Fourth Proportional to 3,123.07, 4,309.68 and 2,240.35

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Solution

The fourth proportional to 3,123.07, 4,309.68 and 2,240.35 is: 3,091.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.07 : 4,309.68 = 2,240.35 : x
  2. Step 2: Convert to fraction form
    3,123.07/4,309.68 = 2,240.35/x
  3. Step 3: Cross multiply
    3,123.07x = 4,309.68 × 2,240.35
  4. Step 4: Simplify right side
    3,123.07x = 9,655,191.59
  5. Step 5: Solve for x
    x = 9,655,191.59/3,123.07
  6. Step 6: Final answer
    x = 3,091.57

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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.