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Finding the Fourth Proportional to 8,685.15, 11,984.94 and 5,541

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Solution

The fourth proportional to 8,685.15, 11,984.94 and 5,541 is: 7,646.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.15 : 11,984.94 = 5,541 : x
  2. Step 2: Convert to fraction form
    8,685.15/11,984.94 = 5,541/x
  3. Step 3: Cross multiply
    8,685.15x = 11,984.94 × 5,541
  4. Step 4: Simplify right side
    8,685.15x = 66,408,552.54
  5. Step 5: Solve for x
    x = 66,408,552.54/8,685.15
  6. Step 6: Final answer
    x = 7,646.22

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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.