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Finding the Fourth Proportional to 8,259.10, 12,403.05 and 7,999.90

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Solution

The fourth proportional to 8,259.10, 12,403.05 and 7,999.90 is: 12,013.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259.10 : 12,403.05 = 7,999.90 : x
  2. Step 2: Convert to fraction form
    8,259.10/12,403.05 = 7,999.90/x
  3. Step 3: Cross multiply
    8,259.10x = 12,403.05 × 7,999.90
  4. Step 4: Simplify right side
    8,259.10x = 99,223,159.70
  5. Step 5: Solve for x
    x = 99,223,159.70/8,259.10
  6. Step 6: Final answer
    x = 12,013.80

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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.