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Finding the Fourth Proportional to 6,613.95, 9,919.78 and 1,870.44

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Solution

The fourth proportional to 6,613.95, 9,919.78 and 1,870.44 is: 2,805.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.95 : 9,919.78 = 1,870.44 : x
  2. Step 2: Convert to fraction form
    6,613.95/9,919.78 = 1,870.44/x
  3. Step 3: Cross multiply
    6,613.95x = 9,919.78 × 1,870.44
  4. Step 4: Simplify right side
    6,613.95x = 18,554,353.30
  5. Step 5: Solve for x
    x = 18,554,353.30/6,613.95
  6. Step 6: Final answer
    x = 2,805.34

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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.