Home / 3,903.32-5,388.10-2,643.76

Finding the Fourth Proportional to 3,903.32, 5,388.10 and 2,643.76

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Solution

The fourth proportional to 3,903.32, 5,388.10 and 2,643.76 is: 3,649.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.32 : 5,388.10 = 2,643.76 : x
  2. Step 2: Convert to fraction form
    3,903.32/5,388.10 = 2,643.76/x
  3. Step 3: Cross multiply
    3,903.32x = 5,388.10 × 2,643.76
  4. Step 4: Simplify right side
    3,903.32x = 14,244,843.26
  5. Step 5: Solve for x
    x = 14,244,843.26/3,903.32
  6. Step 6: Final answer
    x = 3,649.42

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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.