Home / 2,643.36-3,965.40-1,343.76

Finding the Fourth Proportional to 2,643.36, 3,965.40 and 1,343.76

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Solution

The fourth proportional to 2,643.36, 3,965.40 and 1,343.76 is: 2,015.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.36 : 3,965.40 = 1,343.76 : x
  2. Step 2: Convert to fraction form
    2,643.36/3,965.40 = 1,343.76/x
  3. Step 3: Cross multiply
    2,643.36x = 3,965.40 × 1,343.76
  4. Step 4: Simplify right side
    2,643.36x = 5,328,545.90
  5. Step 5: Solve for x
    x = 5,328,545.90/2,643.36
  6. Step 6: Final answer
    x = 2,015.82

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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.