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Finding the Fourth Proportional to 6,939.31, 10,408.95 and 1,745.18

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Solution

The fourth proportional to 6,939.31, 10,408.95 and 1,745.18 is: 2,617.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939.31 : 10,408.95 = 1,745.18 : x
  2. Step 2: Convert to fraction form
    6,939.31/10,408.95 = 1,745.18/x
  3. Step 3: Cross multiply
    6,939.31x = 10,408.95 × 1,745.18
  4. Step 4: Simplify right side
    6,939.31x = 18,165,491.36
  5. Step 5: Solve for x
    x = 18,165,491.36/6,939.31
  6. Step 6: Final answer
    x = 2,617.77

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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.