Home / 8,140.86-11,231.91-4,995.90

Finding the Fourth Proportional to 8,140.86, 11,231.91 and 4,995.90

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Solution

The fourth proportional to 8,140.86, 11,231.91 and 4,995.90 is: 6,892.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.86 : 11,231.91 = 4,995.90 : x
  2. Step 2: Convert to fraction form
    8,140.86/11,231.91 = 4,995.90/x
  3. Step 3: Cross multiply
    8,140.86x = 11,231.91 × 4,995.90
  4. Step 4: Simplify right side
    8,140.86x = 56,113,499.17
  5. Step 5: Solve for x
    x = 56,113,499.17/8,140.86
  6. Step 6: Final answer
    x = 6,892.82

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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.