Home / 6,747.90-10,121.85-4,890.30

Finding the Fourth Proportional to 6,747.90, 10,121.85 and 4,890.30

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Solution

The fourth proportional to 6,747.90, 10,121.85 and 4,890.30 is: 7,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,747.90 : 10,121.85 = 4,890.30 : x
  2. Step 2: Convert to fraction form
    6,747.90/10,121.85 = 4,890.30/x
  3. Step 3: Cross multiply
    6,747.90x = 10,121.85 × 4,890.30
  4. Step 4: Simplify right side
    6,747.90x = 49,498,883.06
  5. Step 5: Solve for x
    x = 49,498,883.06/6,747.90
  6. Step 6: Final answer
    x = 7,335.45

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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.