Home / 8,270.85-12,400.61-3,888.75

Finding the Fourth Proportional to 8,270.85, 12,400.61 and 3,888.75

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Solution

The fourth proportional to 8,270.85, 12,400.61 and 3,888.75 is: 5,830.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,270.85 : 12,400.61 = 3,888.75 : x
  2. Step 2: Convert to fraction form
    8,270.85/12,400.61 = 3,888.75/x
  3. Step 3: Cross multiply
    8,270.85x = 12,400.61 × 3,888.75
  4. Step 4: Simplify right side
    8,270.85x = 48,222,852.69
  5. Step 5: Solve for x
    x = 48,222,852.69/8,270.85
  6. Step 6: Final answer
    x = 5,830.46

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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.