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Finding the Fourth Proportional to 2,317.26, 3,475.91 and 778.26

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Solution

The fourth proportional to 2,317.26, 3,475.91 and 778.26 is: 1,167.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,317.26 : 3,475.91 = 778.26 : x
  2. Step 2: Convert to fraction form
    2,317.26/3,475.91 = 778.26/x
  3. Step 3: Cross multiply
    2,317.26x = 3,475.91 × 778.26
  4. Step 4: Simplify right side
    2,317.26x = 2,705,161.72
  5. Step 5: Solve for x
    x = 2,705,161.72/2,317.26
  6. Step 6: Final answer
    x = 1,167.40

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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.