Home / 8,122.08-12,187.98-7,461.12

Finding the Fourth Proportional to 8,122.08, 12,187.98 and 7,461.12

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Solution

The fourth proportional to 8,122.08, 12,187.98 and 7,461.12 is: 11,196.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.08 : 12,187.98 = 7,461.12 : x
  2. Step 2: Convert to fraction form
    8,122.08/12,187.98 = 7,461.12/x
  3. Step 3: Cross multiply
    8,122.08x = 12,187.98 × 7,461.12
  4. Step 4: Simplify right side
    8,122.08x = 90,935,981.34
  5. Step 5: Solve for x
    x = 90,935,981.34/8,122.08
  6. Step 6: Final answer
    x = 11,196.14

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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.