Home / 2,997.30-4,138.32-2,681.61

Finding the Fourth Proportional to 2,997.30, 4,138.32 and 2,681.61

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Solution

The fourth proportional to 2,997.30, 4,138.32 and 2,681.61 is: 3,702.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,997.30 : 4,138.32 = 2,681.61 : x
  2. Step 2: Convert to fraction form
    2,997.30/4,138.32 = 2,681.61/x
  3. Step 3: Cross multiply
    2,997.30x = 4,138.32 × 2,681.61
  4. Step 4: Simplify right side
    2,997.30x = 11,097,360.30
  5. Step 5: Solve for x
    x = 11,097,360.30/2,997.30
  6. Step 6: Final answer
    x = 3,702.45

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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.