Home / 8,431.16-11,639.57-5,074.79

Finding the Fourth Proportional to 8,431.16, 11,639.57 and 5,074.79

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Solution

The fourth proportional to 8,431.16, 11,639.57 and 5,074.79 is: 7,005.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.16 : 11,639.57 = 5,074.79 : x
  2. Step 2: Convert to fraction form
    8,431.16/11,639.57 = 5,074.79/x
  3. Step 3: Cross multiply
    8,431.16x = 11,639.57 × 5,074.79
  4. Step 4: Simplify right side
    8,431.16x = 59,068,289.87
  5. Step 5: Solve for x
    x = 59,068,289.87/8,431.16
  6. Step 6: Final answer
    x = 7,005.95

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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.