Home / 7,685.97-11,527.61-2,139.75

Finding the Fourth Proportional to 7,685.97, 11,527.61 and 2,139.75

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Solution

The fourth proportional to 7,685.97, 11,527.61 and 2,139.75 is: 3,209.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.97 : 11,527.61 = 2,139.75 : x
  2. Step 2: Convert to fraction form
    7,685.97/11,527.61 = 2,139.75/x
  3. Step 3: Cross multiply
    7,685.97x = 11,527.61 × 2,139.75
  4. Step 4: Simplify right side
    7,685.97x = 24,666,192.80
  5. Step 5: Solve for x
    x = 24,666,192.80/7,685.97
  6. Step 6: Final answer
    x = 3,209.25

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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.