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Finding the Fourth Proportional to 1,754.11, 2,420.72 and 1,008.21

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Solution

The fourth proportional to 1,754.11, 2,420.72 and 1,008.21 is: 1,391.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,754.11 : 2,420.72 = 1,008.21 : x
  2. Step 2: Convert to fraction form
    1,754.11/2,420.72 = 1,008.21/x
  3. Step 3: Cross multiply
    1,754.11x = 2,420.72 × 1,008.21
  4. Step 4: Simplify right side
    1,754.11x = 2,440,594.11
  5. Step 5: Solve for x
    x = 2,440,594.11/1,754.11
  6. Step 6: Final answer
    x = 1,391.36

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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.