Home / 8,986.29-12,398.58-5,208.71

Finding the Fourth Proportional to 8,986.29, 12,398.58 and 5,208.71

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Solution

The fourth proportional to 8,986.29, 12,398.58 and 5,208.71 is: 7,186.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.29 : 12,398.58 = 5,208.71 : x
  2. Step 2: Convert to fraction form
    8,986.29/12,398.58 = 5,208.71/x
  3. Step 3: Cross multiply
    8,986.29x = 12,398.58 × 5,208.71
  4. Step 4: Simplify right side
    8,986.29x = 64,580,552.96
  5. Step 5: Solve for x
    x = 64,580,552.96/8,986.29
  6. Step 6: Final answer
    x = 7,186.56

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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.