Home / 8,376.67-11,545.54-7,172.90

Finding the Fourth Proportional to 8,376.67, 11,545.54 and 7,172.90

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Solution

The fourth proportional to 8,376.67, 11,545.54 and 7,172.90 is: 9,886.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,376.67 : 11,545.54 = 7,172.90 : x
  2. Step 2: Convert to fraction form
    8,376.67/11,545.54 = 7,172.90/x
  3. Step 3: Cross multiply
    8,376.67x = 11,545.54 × 7,172.90
  4. Step 4: Simplify right side
    8,376.67x = 82,815,036.45
  5. Step 5: Solve for x
    x = 82,815,036.45/8,376.67
  6. Step 6: Final answer
    x = 9,886.40

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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.