Home / 2,265.11-3,125.61-1,320.65

Finding the Fourth Proportional to 2,265.11, 3,125.61 and 1,320.65

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Solution

The fourth proportional to 2,265.11, 3,125.61 and 1,320.65 is: 1,822.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.11 : 3,125.61 = 1,320.65 : x
  2. Step 2: Convert to fraction form
    2,265.11/3,125.61 = 1,320.65/x
  3. Step 3: Cross multiply
    2,265.11x = 3,125.61 × 1,320.65
  4. Step 4: Simplify right side
    2,265.11x = 4,127,821.22
  5. Step 5: Solve for x
    x = 4,127,821.22/2,265.11
  6. Step 6: Final answer
    x = 1,822.35

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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.