Home / 7,721.89-10,655.92-4,185.02

Finding the Fourth Proportional to 7,721.89, 10,655.92 and 4,185.02

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Solution

The fourth proportional to 7,721.89, 10,655.92 and 4,185.02 is: 5,775.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.89 : 10,655.92 = 4,185.02 : x
  2. Step 2: Convert to fraction form
    7,721.89/10,655.92 = 4,185.02/x
  3. Step 3: Cross multiply
    7,721.89x = 10,655.92 × 4,185.02
  4. Step 4: Simplify right side
    7,721.89x = 44,595,217.39
  5. Step 5: Solve for x
    x = 44,595,217.39/7,721.89
  6. Step 6: Final answer
    x = 5,775.17

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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.