Home / 2,447.32-3,377.64-1,399.36

Finding the Fourth Proportional to 2,447.32, 3,377.64 and 1,399.36

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Solution

The fourth proportional to 2,447.32, 3,377.64 and 1,399.36 is: 1,931.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.32 : 3,377.64 = 1,399.36 : x
  2. Step 2: Convert to fraction form
    2,447.32/3,377.64 = 1,399.36/x
  3. Step 3: Cross multiply
    2,447.32x = 3,377.64 × 1,399.36
  4. Step 4: Simplify right side
    2,447.32x = 4,726,534.31
  5. Step 5: Solve for x
    x = 4,726,534.31/2,447.32
  6. Step 6: Final answer
    x = 1,931.31

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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.