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Finding the Fourth Proportional to 6,980.72, 10,471.08 and 4,385.48

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Solution

The fourth proportional to 6,980.72, 10,471.08 and 4,385.48 is: 6,578.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,980.72 : 10,471.08 = 4,385.48 : x
  2. Step 2: Convert to fraction form
    6,980.72/10,471.08 = 4,385.48/x
  3. Step 3: Cross multiply
    6,980.72x = 10,471.08 × 4,385.48
  4. Step 4: Simplify right side
    6,980.72x = 45,920,711.92
  5. Step 5: Solve for x
    x = 45,920,711.92/6,980.72
  6. Step 6: Final answer
    x = 6,578.22

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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.