Home / 6,138.77-9,212.80-4,920.89

Finding the Fourth Proportional to 6,138.77, 9,212.80 and 4,920.89

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Solution

The fourth proportional to 6,138.77, 9,212.80 and 4,920.89 is: 7,385.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,138.77 : 9,212.80 = 4,920.89 : x
  2. Step 2: Convert to fraction form
    6,138.77/9,212.80 = 4,920.89/x
  3. Step 3: Cross multiply
    6,138.77x = 9,212.80 × 4,920.89
  4. Step 4: Simplify right side
    6,138.77x = 45,335,164.23
  5. Step 5: Solve for x
    x = 45,335,164.23/6,138.77
  6. Step 6: Final answer
    x = 7,385.05

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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.