Home / 8,102.50-11,186.31-5,312.86

Finding the Fourth Proportional to 8,102.50, 11,186.31 and 5,312.86

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Solution

The fourth proportional to 8,102.50, 11,186.31 and 5,312.86 is: 7,334.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.50 : 11,186.31 = 5,312.86 : x
  2. Step 2: Convert to fraction form
    8,102.50/11,186.31 = 5,312.86/x
  3. Step 3: Cross multiply
    8,102.50x = 11,186.31 × 5,312.86
  4. Step 4: Simplify right side
    8,102.50x = 59,431,298.95
  5. Step 5: Solve for x
    x = 59,431,298.95/8,102.50
  6. Step 6: Final answer
    x = 7,334.93

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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.