Home / 8,725.12-12,041.60-5,189.12

Finding the Fourth Proportional to 8,725.12, 12,041.60 and 5,189.12

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Solution

The fourth proportional to 8,725.12, 12,041.60 and 5,189.12 is: 7,161.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,725.12 : 12,041.60 = 5,189.12 : x
  2. Step 2: Convert to fraction form
    8,725.12/12,041.60 = 5,189.12/x
  3. Step 3: Cross multiply
    8,725.12x = 12,041.60 × 5,189.12
  4. Step 4: Simplify right side
    8,725.12x = 62,485,307.39
  5. Step 5: Solve for x
    x = 62,485,307.39/8,725.12
  6. Step 6: Final answer
    x = 7,161.54

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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.