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Finding the Fourth Proportional to 5,920.15, 8,889.83 and 4,288.15

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Solution

The fourth proportional to 5,920.15, 8,889.83 and 4,288.15 is: 6,439.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,920.15 : 8,889.83 = 4,288.15 : x
  2. Step 2: Convert to fraction form
    5,920.15/8,889.83 = 4,288.15/x
  3. Step 3: Cross multiply
    5,920.15x = 8,889.83 × 4,288.15
  4. Step 4: Simplify right side
    5,920.15x = 38,120,903.07
  5. Step 5: Solve for x
    x = 38,120,903.07/5,920.15
  6. Step 6: Final answer
    x = 6,439.18

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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.