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Finding the Fourth Proportional to 6,617.21, 9,925.82 and 2,919.45

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Solution

The fourth proportional to 6,617.21, 9,925.82 and 2,919.45 is: 4,379.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,617.21 : 9,925.82 = 2,919.45 : x
  2. Step 2: Convert to fraction form
    6,617.21/9,925.82 = 2,919.45/x
  3. Step 3: Cross multiply
    6,617.21x = 9,925.82 × 2,919.45
  4. Step 4: Simplify right side
    6,617.21x = 28,977,920.60
  5. Step 5: Solve for x
    x = 28,977,920.60/6,617.21
  6. Step 6: Final answer
    x = 4,379.18

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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.