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Finding the Fourth Proportional to 4,935.72, 7,376.29 and 4,421.78

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Solution

The fourth proportional to 4,935.72, 7,376.29 and 4,421.78 is: 6,608.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,935.72 : 7,376.29 = 4,421.78 : x
  2. Step 2: Convert to fraction form
    4,935.72/7,376.29 = 4,421.78/x
  3. Step 3: Cross multiply
    4,935.72x = 7,376.29 × 4,421.78
  4. Step 4: Simplify right side
    4,935.72x = 32,616,331.60
  5. Step 5: Solve for x
    x = 32,616,331.60/4,935.72
  6. Step 6: Final answer
    x = 6,608.22

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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.