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Finding the Fourth Proportional to 3,753.99, 5,174.30 and 2,820.87

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Solution

The fourth proportional to 3,753.99, 5,174.30 and 2,820.87 is: 3,888.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,753.99 : 5,174.30 = 2,820.87 : x
  2. Step 2: Convert to fraction form
    3,753.99/5,174.30 = 2,820.87/x
  3. Step 3: Cross multiply
    3,753.99x = 5,174.30 × 2,820.87
  4. Step 4: Simplify right side
    3,753.99x = 14,596,013.54
  5. Step 5: Solve for x
    x = 14,596,013.54/3,753.99
  6. Step 6: Final answer
    x = 3,888.13

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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.