Home / 8,812.75-12,162.08-5,087.95

Finding the Fourth Proportional to 8,812.75, 12,162.08 and 5,087.95

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Solution

The fourth proportional to 8,812.75, 12,162.08 and 5,087.95 is: 7,021.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.75 : 12,162.08 = 5,087.95 : x
  2. Step 2: Convert to fraction form
    8,812.75/12,162.08 = 5,087.95/x
  3. Step 3: Cross multiply
    8,812.75x = 12,162.08 × 5,087.95
  4. Step 4: Simplify right side
    8,812.75x = 61,880,029.50
  5. Step 5: Solve for x
    x = 61,880,029.50/8,812.75
  6. Step 6: Final answer
    x = 7,021.65

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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.