Home / 7,823.39-11,721.37-6,515.57

Finding the Fourth Proportional to 7,823.39, 11,721.37 and 6,515.57

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Solution

The fourth proportional to 7,823.39, 11,721.37 and 6,515.57 is: 9,761.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,823.39 : 11,721.37 = 6,515.57 : x
  2. Step 2: Convert to fraction form
    7,823.39/11,721.37 = 6,515.57/x
  3. Step 3: Cross multiply
    7,823.39x = 11,721.37 × 6,515.57
  4. Step 4: Simplify right side
    7,823.39x = 76,371,331.84
  5. Step 5: Solve for x
    x = 76,371,331.84/7,823.39
  6. Step 6: Final answer
    x = 9,761.92

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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.