Home / 8,812.50-12,161.73-5,087.70

Finding the Fourth Proportional to 8,812.50, 12,161.73 and 5,087.70

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Solution

The fourth proportional to 8,812.50, 12,161.73 and 5,087.70 is: 7,021.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.50 : 12,161.73 = 5,087.70 : x
  2. Step 2: Convert to fraction form
    8,812.50/12,161.73 = 5,087.70/x
  3. Step 3: Cross multiply
    8,812.50x = 12,161.73 × 5,087.70
  4. Step 4: Simplify right side
    8,812.50x = 61,875,233.72
  5. Step 5: Solve for x
    x = 61,875,233.72/8,812.50
  6. Step 6: Final answer
    x = 7,021.30

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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.