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Finding the Fourth Proportional to 6,291.30, 8,674.85 and 4,019.63

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Solution

The fourth proportional to 6,291.30, 8,674.85 and 4,019.63 is: 5,542.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,291.30 : 8,674.85 = 4,019.63 : x
  2. Step 2: Convert to fraction form
    6,291.30/8,674.85 = 4,019.63/x
  3. Step 3: Cross multiply
    6,291.30x = 8,674.85 × 4,019.63
  4. Step 4: Simplify right side
    6,291.30x = 34,869,687.31
  5. Step 5: Solve for x
    x = 34,869,687.31/6,291.30
  6. Step 6: Final answer
    x = 5,542.52

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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.