Home / 6,430.62-8,874.87-3,912.18

Finding the Fourth Proportional to 6,430.62, 8,874.87 and 3,912.18

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Solution

The fourth proportional to 6,430.62, 8,874.87 and 3,912.18 is: 5,399.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.62 : 8,874.87 = 3,912.18 : x
  2. Step 2: Convert to fraction form
    6,430.62/8,874.87 = 3,912.18/x
  3. Step 3: Cross multiply
    6,430.62x = 8,874.87 × 3,912.18
  4. Step 4: Simplify right side
    6,430.62x = 34,720,088.92
  5. Step 5: Solve for x
    x = 34,720,088.92/6,430.62
  6. Step 6: Final answer
    x = 5,399.18

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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.