Home / 7,721.57-10,655.75-4,184.78

Finding the Fourth Proportional to 7,721.57, 10,655.75 and 4,184.78

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Solution

The fourth proportional to 7,721.57, 10,655.75 and 4,184.78 is: 5,774.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.57 : 10,655.75 = 4,184.78 : x
  2. Step 2: Convert to fraction form
    7,721.57/10,655.75 = 4,184.78/x
  3. Step 3: Cross multiply
    7,721.57x = 10,655.75 × 4,184.78
  4. Step 4: Simplify right side
    7,721.57x = 44,591,926.67
  5. Step 5: Solve for x
    x = 44,591,926.67/7,721.57
  6. Step 6: Final answer
    x = 5,774.98

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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.