Home / 8,548.20-12,822.30-7,187.40

Finding the Fourth Proportional to 8,548.20, 12,822.30 and 7,187.40

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Solution

The fourth proportional to 8,548.20, 12,822.30 and 7,187.40 is: 10,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,548.20 : 12,822.30 = 7,187.40 : x
  2. Step 2: Convert to fraction form
    8,548.20/12,822.30 = 7,187.40/x
  3. Step 3: Cross multiply
    8,548.20x = 12,822.30 × 7,187.40
  4. Step 4: Simplify right side
    8,548.20x = 92,158,999.02
  5. Step 5: Solve for x
    x = 92,158,999.02/8,548.20
  6. Step 6: Final answer
    x = 10,781.10

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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.