Home / 8,127.45-12,176.60-7,690.05

Finding the Fourth Proportional to 8,127.45, 12,176.60 and 7,690.05

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Solution

The fourth proportional to 8,127.45, 12,176.60 and 7,690.05 is: 11,521.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.45 : 12,176.60 = 7,690.05 : x
  2. Step 2: Convert to fraction form
    8,127.45/12,176.60 = 7,690.05/x
  3. Step 3: Cross multiply
    8,127.45x = 12,176.60 × 7,690.05
  4. Step 4: Simplify right side
    8,127.45x = 93,638,624.38
  5. Step 5: Solve for x
    x = 93,638,624.38/8,127.45
  6. Step 6: Final answer
    x = 11,521.28

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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.