Home / 8,926.75-12,318.92-5,390.83

Finding the Fourth Proportional to 8,926.75, 12,318.92 and 5,390.83

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Solution

The fourth proportional to 8,926.75, 12,318.92 and 5,390.83 is: 7,439.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,926.75 : 12,318.92 = 5,390.83 : x
  2. Step 2: Convert to fraction form
    8,926.75/12,318.92 = 5,390.83/x
  3. Step 3: Cross multiply
    8,926.75x = 12,318.92 × 5,390.83
  4. Step 4: Simplify right side
    8,926.75x = 66,409,176.55
  5. Step 5: Solve for x
    x = 66,409,176.55/8,926.75
  6. Step 6: Final answer
    x = 7,439.35

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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.