Home / 8,821.16-13,214.43-5,115.60

Finding the Fourth Proportional to 8,821.16, 13,214.43 and 5,115.60

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Solution

The fourth proportional to 8,821.16, 13,214.43 and 5,115.60 is: 7,663.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.16 : 13,214.43 = 5,115.60 : x
  2. Step 2: Convert to fraction form
    8,821.16/13,214.43 = 5,115.60/x
  3. Step 3: Cross multiply
    8,821.16x = 13,214.43 × 5,115.60
  4. Step 4: Simplify right side
    8,821.16x = 67,599,762.54
  5. Step 5: Solve for x
    x = 67,599,762.54/8,821.16
  6. Step 6: Final answer
    x = 7,663.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.