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Finding the Fourth Proportional to 6,658.85, 9,187.07 and 4,421.16

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Solution

The fourth proportional to 6,658.85, 9,187.07 and 4,421.16 is: 6,099.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,658.85 : 9,187.07 = 4,421.16 : x
  2. Step 2: Convert to fraction form
    6,658.85/9,187.07 = 4,421.16/x
  3. Step 3: Cross multiply
    6,658.85x = 9,187.07 × 4,421.16
  4. Step 4: Simplify right side
    6,658.85x = 40,617,506.40
  5. Step 5: Solve for x
    x = 40,617,506.40/6,658.85
  6. Step 6: Final answer
    x = 6,099.78

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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.