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Finding the Fourth Proportional to 2,771.68, 4,157.68 and 1,040.26

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Solution

The fourth proportional to 2,771.68, 4,157.68 and 1,040.26 is: 1,560.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.68 : 4,157.68 = 1,040.26 : x
  2. Step 2: Convert to fraction form
    2,771.68/4,157.68 = 1,040.26/x
  3. Step 3: Cross multiply
    2,771.68x = 4,157.68 × 1,040.26
  4. Step 4: Simplify right side
    2,771.68x = 4,325,068.20
  5. Step 5: Solve for x
    x = 4,325,068.20/2,771.68
  6. Step 6: Final answer
    x = 1,560.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.