Home / 6,515.28-8,991.09-3,531.15

Finding the Fourth Proportional to 6,515.28, 8,991.09 and 3,531.15

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Solution

The fourth proportional to 6,515.28, 8,991.09 and 3,531.15 is: 4,872.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.28 : 8,991.09 = 3,531.15 : x
  2. Step 2: Convert to fraction form
    6,515.28/8,991.09 = 3,531.15/x
  3. Step 3: Cross multiply
    6,515.28x = 8,991.09 × 3,531.15
  4. Step 4: Simplify right side
    6,515.28x = 31,748,887.45
  5. Step 5: Solve for x
    x = 31,748,887.45/6,515.28
  6. Step 6: Final answer
    x = 4,872.99

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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.