Home / 8,503.20-11,721.36-5,518.56

Finding the Fourth Proportional to 8,503.20, 11,721.36 and 5,518.56

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Solution

The fourth proportional to 8,503.20, 11,721.36 and 5,518.56 is: 7,607.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,503.20 : 11,721.36 = 5,518.56 : x
  2. Step 2: Convert to fraction form
    8,503.20/11,721.36 = 5,518.56/x
  3. Step 3: Cross multiply
    8,503.20x = 11,721.36 × 5,518.56
  4. Step 4: Simplify right side
    8,503.20x = 64,685,028.44
  5. Step 5: Solve for x
    x = 64,685,028.44/8,503.20
  6. Step 6: Final answer
    x = 7,607.14

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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.