Home / 6,515.81-8,991.76-3,531.64

Finding the Fourth Proportional to 6,515.81, 8,991.76 and 3,531.64

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Solution

The fourth proportional to 6,515.81, 8,991.76 and 3,531.64 is: 4,873.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.81 : 8,991.76 = 3,531.64 : x
  2. Step 2: Convert to fraction form
    6,515.81/8,991.76 = 3,531.64/x
  3. Step 3: Cross multiply
    6,515.81x = 8,991.76 × 3,531.64
  4. Step 4: Simplify right side
    6,515.81x = 31,755,659.29
  5. Step 5: Solve for x
    x = 31,755,659.29/6,515.81
  6. Step 6: Final answer
    x = 4,873.63

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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.