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Finding the Fourth Proportional to 6,649.83, 9,978.39 and 5,604.93

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Solution

The fourth proportional to 6,649.83, 9,978.39 and 5,604.93 is: 8,410.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,649.83 : 9,978.39 = 5,604.93 : x
  2. Step 2: Convert to fraction form
    6,649.83/9,978.39 = 5,604.93/x
  3. Step 3: Cross multiply
    6,649.83x = 9,978.39 × 5,604.93
  4. Step 4: Simplify right side
    6,649.83x = 55,928,177.46
  5. Step 5: Solve for x
    x = 55,928,177.46/6,649.83
  6. Step 6: Final answer
    x = 8,410.47

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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.