Home / 7,715.80-11,574.15-2,169.57

Finding the Fourth Proportional to 7,715.80, 11,574.15 and 2,169.57

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Solution

The fourth proportional to 7,715.80, 11,574.15 and 2,169.57 is: 3,254.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.80 : 11,574.15 = 2,169.57 : x
  2. Step 2: Convert to fraction form
    7,715.80/11,574.15 = 2,169.57/x
  3. Step 3: Cross multiply
    7,715.80x = 11,574.15 × 2,169.57
  4. Step 4: Simplify right side
    7,715.80x = 25,110,949.13
  5. Step 5: Solve for x
    x = 25,110,949.13/7,715.80
  6. Step 6: Final answer
    x = 3,254.48

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1.5x scale

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.