Home / 7,721.72-10,655.51-4,318.71

Finding the Fourth Proportional to 7,721.72, 10,655.51 and 4,318.71

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Solution

The fourth proportional to 7,721.72, 10,655.51 and 4,318.71 is: 5,959.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.72 : 10,655.51 = 4,318.71 : x
  2. Step 2: Convert to fraction form
    7,721.72/10,655.51 = 4,318.71/x
  3. Step 3: Cross multiply
    7,721.72x = 10,655.51 × 4,318.71
  4. Step 4: Simplify right side
    7,721.72x = 46,018,057.59
  5. Step 5: Solve for x
    x = 46,018,057.59/7,721.72
  6. Step 6: Final answer
    x = 5,959.56

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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.