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Finding the Fourth Proportional to 6,443.08, 8,890.02 and 4,088.20

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Solution

The fourth proportional to 6,443.08, 8,890.02 and 4,088.20 is: 5,640.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,443.08 : 8,890.02 = 4,088.20 : x
  2. Step 2: Convert to fraction form
    6,443.08/8,890.02 = 4,088.20/x
  3. Step 3: Cross multiply
    6,443.08x = 8,890.02 × 4,088.20
  4. Step 4: Simplify right side
    6,443.08x = 36,344,179.76
  5. Step 5: Solve for x
    x = 36,344,179.76/6,443.08
  6. Step 6: Final answer
    x = 5,640.81

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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.