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Finding the Fourth Proportional to 2,778.84, 4,168.26 and 1,759.32

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Solution

The fourth proportional to 2,778.84, 4,168.26 and 1,759.32 is: 2,638.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.84 : 4,168.26 = 1,759.32 : x
  2. Step 2: Convert to fraction form
    2,778.84/4,168.26 = 1,759.32/x
  3. Step 3: Cross multiply
    2,778.84x = 4,168.26 × 1,759.32
  4. Step 4: Simplify right side
    2,778.84x = 7,333,303.18
  5. Step 5: Solve for x
    x = 7,333,303.18/2,778.84
  6. Step 6: Final answer
    x = 2,638.98

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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.