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Finding the Fourth Proportional to 6,390.76, 9,586.12 and 2,008.56

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Solution

The fourth proportional to 6,390.76, 9,586.12 and 2,008.56 is: 3,012.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.76 : 9,586.12 = 2,008.56 : x
  2. Step 2: Convert to fraction form
    6,390.76/9,586.12 = 2,008.56/x
  3. Step 3: Cross multiply
    6,390.76x = 9,586.12 × 2,008.56
  4. Step 4: Simplify right side
    6,390.76x = 19,254,297.19
  5. Step 5: Solve for x
    x = 19,254,297.19/6,390.76
  6. Step 6: Final answer
    x = 3,012.83

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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.