Home / 5,515.25-8,309.67-4,988.76

Finding the Fourth Proportional to 5,515.25, 8,309.67 and 4,988.76

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Solution

The fourth proportional to 5,515.25, 8,309.67 and 4,988.76 is: 7,516.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.25 : 8,309.67 = 4,988.76 : x
  2. Step 2: Convert to fraction form
    5,515.25/8,309.67 = 4,988.76/x
  3. Step 3: Cross multiply
    5,515.25x = 8,309.67 × 4,988.76
  4. Step 4: Simplify right side
    5,515.25x = 41,454,949.31
  5. Step 5: Solve for x
    x = 41,454,949.31/5,515.25
  6. Step 6: Final answer
    x = 7,516.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.