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Finding the Fourth Proportional to 6,721.42, 9,274.98 and 3,737.20

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Solution

The fourth proportional to 6,721.42, 9,274.98 and 3,737.20 is: 5,157.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.42 : 9,274.98 = 3,737.20 : x
  2. Step 2: Convert to fraction form
    6,721.42/9,274.98 = 3,737.20/x
  3. Step 3: Cross multiply
    6,721.42x = 9,274.98 × 3,737.20
  4. Step 4: Simplify right side
    6,721.42x = 34,662,455.26
  5. Step 5: Solve for x
    x = 34,662,455.26/6,721.42
  6. Step 6: Final answer
    x = 5,157.01

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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.