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Finding the Fourth Proportional to 3,985, 5,937.89 and 3,548.80

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Solution

The fourth proportional to 3,985, 5,937.89 and 3,548.80 is: 5,287.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985 : 5,937.89 = 3,548.80 : x
  2. Step 2: Convert to fraction form
    3,985/5,937.89 = 3,548.80/x
  3. Step 3: Cross multiply
    3,985x = 5,937.89 × 3,548.80
  4. Step 4: Simplify right side
    3,985x = 21,072,384.03
  5. Step 5: Solve for x
    x = 21,072,384.03/3,985
  6. Step 6: Final answer
    x = 5,287.93

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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.