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Finding the Fourth Proportional to 6,388.70, 9,574.92 and 2,874.93

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Solution

The fourth proportional to 6,388.70, 9,574.92 and 2,874.93 is: 4,308.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388.70 : 9,574.92 = 2,874.93 : x
  2. Step 2: Convert to fraction form
    6,388.70/9,574.92 = 2,874.93/x
  3. Step 3: Cross multiply
    6,388.70x = 9,574.92 × 2,874.93
  4. Step 4: Simplify right side
    6,388.70x = 27,527,224.76
  5. Step 5: Solve for x
    x = 27,527,224.76/6,388.70
  6. Step 6: Final answer
    x = 4,308.74

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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.