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Finding the Fourth Proportional to 5,358.78, 7,393.83 and 3,000.54

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Solution

The fourth proportional to 5,358.78, 7,393.83 and 3,000.54 is: 4,140.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,358.78 : 7,393.83 = 3,000.54 : x
  2. Step 2: Convert to fraction form
    5,358.78/7,393.83 = 3,000.54/x
  3. Step 3: Cross multiply
    5,358.78x = 7,393.83 × 3,000.54
  4. Step 4: Simplify right side
    5,358.78x = 22,185,482.67
  5. Step 5: Solve for x
    x = 22,185,482.67/5,358.78
  6. Step 6: Final answer
    x = 4,140.02

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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.