Home / 2,690.20-3,702.36-2,276

Finding the Fourth Proportional to 2,690.20, 3,702.36 and 2,276

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Solution

The fourth proportional to 2,690.20, 3,702.36 and 2,276 is: 3,132.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.20 : 3,702.36 = 2,276 : x
  2. Step 2: Convert to fraction form
    2,690.20/3,702.36 = 2,276/x
  3. Step 3: Cross multiply
    2,690.20x = 3,702.36 × 2,276
  4. Step 4: Simplify right side
    2,690.20x = 8,426,571.36
  5. Step 5: Solve for x
    x = 8,426,571.36/2,690.20
  6. Step 6: Final answer
    x = 3,132.32

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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.