Home / 8,685.58-11,981.68-5,493.49

Finding the Fourth Proportional to 8,685.58, 11,981.68 and 5,493.49

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Solution

The fourth proportional to 8,685.58, 11,981.68 and 5,493.49 is: 7,578.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.58 : 11,981.68 = 5,493.49 : x
  2. Step 2: Convert to fraction form
    8,685.58/11,981.68 = 5,493.49/x
  3. Step 3: Cross multiply
    8,685.58x = 11,981.68 × 5,493.49
  4. Step 4: Simplify right side
    8,685.58x = 65,821,259.48
  5. Step 5: Solve for x
    x = 65,821,259.48/8,685.58
  6. Step 6: Final answer
    x = 7,578.22

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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.