Home / 8,103.23-12,135.70-5,172.65

Finding the Fourth Proportional to 8,103.23, 12,135.70 and 5,172.65

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Solution

The fourth proportional to 8,103.23, 12,135.70 and 5,172.65 is: 7,746.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.23 : 12,135.70 = 5,172.65 : x
  2. Step 2: Convert to fraction form
    8,103.23/12,135.70 = 5,172.65/x
  3. Step 3: Cross multiply
    8,103.23x = 12,135.70 × 5,172.65
  4. Step 4: Simplify right side
    8,103.23x = 62,773,728.61
  5. Step 5: Solve for x
    x = 62,773,728.61/8,103.23
  6. Step 6: Final answer
    x = 7,746.75

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1.5x scale

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.