Home / 7,738.12-11,580.88-4,778.43

Finding the Fourth Proportional to 7,738.12, 11,580.88 and 4,778.43

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Solution

The fourth proportional to 7,738.12, 11,580.88 and 4,778.43 is: 7,151.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,738.12 : 11,580.88 = 4,778.43 : x
  2. Step 2: Convert to fraction form
    7,738.12/11,580.88 = 4,778.43/x
  3. Step 3: Cross multiply
    7,738.12x = 11,580.88 × 4,778.43
  4. Step 4: Simplify right side
    7,738.12x = 55,338,424.42
  5. Step 5: Solve for x
    x = 55,338,424.42/7,738.12
  6. Step 6: Final answer
    x = 7,151.40

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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.