Home / 7,851.91-11,777.70-2,305.13

Finding the Fourth Proportional to 7,851.91, 11,777.70 and 2,305.13

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Solution

The fourth proportional to 7,851.91, 11,777.70 and 2,305.13 is: 3,457.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.91 : 11,777.70 = 2,305.13 : x
  2. Step 2: Convert to fraction form
    7,851.91/11,777.70 = 2,305.13/x
  3. Step 3: Cross multiply
    7,851.91x = 11,777.70 × 2,305.13
  4. Step 4: Simplify right side
    7,851.91x = 27,149,129.60
  5. Step 5: Solve for x
    x = 27,149,129.60/7,851.91
  6. Step 6: Final answer
    x = 3,457.65

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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.