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Finding the Fourth Proportional to 6,745.89, 9,307.83 and 3,913.74

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Solution

The fourth proportional to 6,745.89, 9,307.83 and 3,913.74 is: 5,400.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,745.89 : 9,307.83 = 3,913.74 : x
  2. Step 2: Convert to fraction form
    6,745.89/9,307.83 = 3,913.74/x
  3. Step 3: Cross multiply
    6,745.89x = 9,307.83 × 3,913.74
  4. Step 4: Simplify right side
    6,745.89x = 36,428,426.58
  5. Step 5: Solve for x
    x = 36,428,426.58/6,745.89
  6. Step 6: Final answer
    x = 5,400.09

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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.