Home / 6,899.79-9,523.86-3,917.61

Finding the Fourth Proportional to 6,899.79, 9,523.86 and 3,917.61

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Solution

The fourth proportional to 6,899.79, 9,523.86 and 3,917.61 is: 5,407.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,899.79 : 9,523.86 = 3,917.61 : x
  2. Step 2: Convert to fraction form
    6,899.79/9,523.86 = 3,917.61/x
  3. Step 3: Cross multiply
    6,899.79x = 9,523.86 × 3,917.61
  4. Step 4: Simplify right side
    6,899.79x = 37,310,769.17
  5. Step 5: Solve for x
    x = 37,310,769.17/6,899.79
  6. Step 6: Final answer
    x = 5,407.52

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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.