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Finding the Fourth Proportional to 7,745.40, 10,683.88 and 6,753.05

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Solution

The fourth proportional to 7,745.40, 10,683.88 and 6,753.05 is: 9,315.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,745.40 : 10,683.88 = 6,753.05 : x
  2. Step 2: Convert to fraction form
    7,745.40/10,683.88 = 6,753.05/x
  3. Step 3: Cross multiply
    7,745.40x = 10,683.88 × 6,753.05
  4. Step 4: Simplify right side
    7,745.40x = 72,148,745.60
  5. Step 5: Solve for x
    x = 72,148,745.60/7,745.40
  6. Step 6: Final answer
    x = 9,315.04

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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.