Home / 8,812.44-13,214.47-5,115.80

Finding the Fourth Proportional to 8,812.44, 13,214.47 and 5,115.80

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Solution

The fourth proportional to 8,812.44, 13,214.47 and 5,115.80 is: 7,671.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.44 : 13,214.47 = 5,115.80 : x
  2. Step 2: Convert to fraction form
    8,812.44/13,214.47 = 5,115.80/x
  3. Step 3: Cross multiply
    8,812.44x = 13,214.47 × 5,115.80
  4. Step 4: Simplify right side
    8,812.44x = 67,602,539.80
  5. Step 5: Solve for x
    x = 67,602,539.80/8,812.44
  6. Step 6: Final answer
    x = 7,671.27

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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.