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Finding the Fourth Proportional to 6,328.40, 9,445.54 and 6,172.88

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Solution

The fourth proportional to 6,328.40, 9,445.54 and 6,172.88 is: 9,213.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,328.40 : 9,445.54 = 6,172.88 : x
  2. Step 2: Convert to fraction form
    6,328.40/9,445.54 = 6,172.88/x
  3. Step 3: Cross multiply
    6,328.40x = 9,445.54 × 6,172.88
  4. Step 4: Simplify right side
    6,328.40x = 58,306,184.96
  5. Step 5: Solve for x
    x = 58,306,184.96/6,328.40
  6. Step 6: Final answer
    x = 9,213.42

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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.