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Finding the Fourth Proportional to 5,578.78, 7,698.58 and 3,060.88

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Solution

The fourth proportional to 5,578.78, 7,698.58 and 3,060.88 is: 4,223.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.78 : 7,698.58 = 3,060.88 : x
  2. Step 2: Convert to fraction form
    5,578.78/7,698.58 = 3,060.88/x
  3. Step 3: Cross multiply
    5,578.78x = 7,698.58 × 3,060.88
  4. Step 4: Simplify right side
    5,578.78x = 23,564,429.55
  5. Step 5: Solve for x
    x = 23,564,429.55/5,578.78
  6. Step 6: Final answer
    x = 4,223.94

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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.