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Finding the Fourth Proportional to 5,669.72, 8,472.05 and 4,328.09

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Solution

The fourth proportional to 5,669.72, 8,472.05 and 4,328.09 is: 6,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,669.72 : 8,472.05 = 4,328.09 : x
  2. Step 2: Convert to fraction form
    5,669.72/8,472.05 = 4,328.09/x
  3. Step 3: Cross multiply
    5,669.72x = 8,472.05 × 4,328.09
  4. Step 4: Simplify right side
    5,669.72x = 36,667,763.34
  5. Step 5: Solve for x
    x = 36,667,763.34/5,669.72
  6. Step 6: Final answer
    x = 6,467.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.