Home / 8,108.15-11,186.96-5,423.30

Finding the Fourth Proportional to 8,108.15, 11,186.96 and 5,423.30

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Solution

The fourth proportional to 8,108.15, 11,186.96 and 5,423.30 is: 7,482.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.15 : 11,186.96 = 5,423.30 : x
  2. Step 2: Convert to fraction form
    8,108.15/11,186.96 = 5,423.30/x
  3. Step 3: Cross multiply
    8,108.15x = 11,186.96 × 5,423.30
  4. Step 4: Simplify right side
    8,108.15x = 60,670,292.50
  5. Step 5: Solve for x
    x = 60,670,292.50/8,108.15
  6. Step 6: Final answer
    x = 7,482.63

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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.