Home / 2,276.50-3,139.99-1,392.74

Finding the Fourth Proportional to 2,276.50, 3,139.99 and 1,392.74

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Solution

The fourth proportional to 2,276.50, 3,139.99 and 1,392.74 is: 1,921.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,276.50 : 3,139.99 = 1,392.74 : x
  2. Step 2: Convert to fraction form
    2,276.50/3,139.99 = 1,392.74/x
  3. Step 3: Cross multiply
    2,276.50x = 3,139.99 × 1,392.74
  4. Step 4: Simplify right side
    2,276.50x = 4,373,181.82
  5. Step 5: Solve for x
    x = 4,373,181.82/2,276.50
  6. Step 6: Final answer
    x = 1,921.01

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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.