Home / 10,222.31-15,335.27-3,985.71

Finding the Fourth Proportional to 10,222.31, 15,335.27 and 3,985.71

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Solution

The fourth proportional to 10,222.31, 15,335.27 and 3,985.71 is: 5,979.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,222.31 : 15,335.27 = 3,985.71 : x
  2. Step 2: Convert to fraction form
    10,222.31/15,335.27 = 3,985.71/x
  3. Step 3: Cross multiply
    10,222.31x = 15,335.27 × 3,985.71
  4. Step 4: Simplify right side
    10,222.31x = 61,121,919.06
  5. Step 5: Solve for x
    x = 61,121,919.06/10,222.31
  6. Step 6: Final answer
    x = 5,979.27

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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.