Home / 7,143.26-9,856.89-3,956.61

Finding the Fourth Proportional to 7,143.26, 9,856.89 and 3,956.61

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Solution

The fourth proportional to 7,143.26, 9,856.89 and 3,956.61 is: 5,459.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.26 : 9,856.89 = 3,956.61 : x
  2. Step 2: Convert to fraction form
    7,143.26/9,856.89 = 3,956.61/x
  3. Step 3: Cross multiply
    7,143.26x = 9,856.89 × 3,956.61
  4. Step 4: Simplify right side
    7,143.26x = 38,999,906.51
  5. Step 5: Solve for x
    x = 38,999,906.51/7,143.26
  6. Step 6: Final answer
    x = 5,459.68

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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.