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Finding the Fourth Proportional to 3,118.88, 4,664.32 and 2,774.24

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Solution

The fourth proportional to 3,118.88, 4,664.32 and 2,774.24 is: 4,148.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.88 : 4,664.32 = 2,774.24 : x
  2. Step 2: Convert to fraction form
    3,118.88/4,664.32 = 2,774.24/x
  3. Step 3: Cross multiply
    3,118.88x = 4,664.32 × 2,774.24
  4. Step 4: Simplify right side
    3,118.88x = 12,939,943.12
  5. Step 5: Solve for x
    x = 12,939,943.12/3,118.88
  6. Step 6: Final answer
    x = 4,148.91

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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.