Home / 8,479.18-12,701.53-5,145.45

Finding the Fourth Proportional to 8,479.18, 12,701.53 and 5,145.45

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Solution

The fourth proportional to 8,479.18, 12,701.53 and 5,145.45 is: 7,707.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.18 : 12,701.53 = 5,145.45 : x
  2. Step 2: Convert to fraction form
    8,479.18/12,701.53 = 5,145.45/x
  3. Step 3: Cross multiply
    8,479.18x = 12,701.53 × 5,145.45
  4. Step 4: Simplify right side
    8,479.18x = 65,355,087.54
  5. Step 5: Solve for x
    x = 65,355,087.54/8,479.18
  6. Step 6: Final answer
    x = 7,707.71

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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.