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Finding the Fourth Proportional to 6,491.44, 9,745.81 and 4,390.13

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Solution

The fourth proportional to 6,491.44, 9,745.81 and 4,390.13 is: 6,591.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,491.44 : 9,745.81 = 4,390.13 : x
  2. Step 2: Convert to fraction form
    6,491.44/9,745.81 = 4,390.13/x
  3. Step 3: Cross multiply
    6,491.44x = 9,745.81 × 4,390.13
  4. Step 4: Simplify right side
    6,491.44x = 42,785,374.39
  5. Step 5: Solve for x
    x = 42,785,374.39/6,491.44
  6. Step 6: Final answer
    x = 6,591.04

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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.