Home / 4,215.40-6,321.54-1,403.71

Finding the Fourth Proportional to 4,215.40, 6,321.54 and 1,403.71

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Solution

The fourth proportional to 4,215.40, 6,321.54 and 1,403.71 is: 2,105.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.40 : 6,321.54 = 1,403.71 : x
  2. Step 2: Convert to fraction form
    4,215.40/6,321.54 = 1,403.71/x
  3. Step 3: Cross multiply
    4,215.40x = 6,321.54 × 1,403.71
  4. Step 4: Simplify right side
    4,215.40x = 8,873,577.31
  5. Step 5: Solve for x
    x = 8,873,577.31/4,215.40
  6. Step 6: Final answer
    x = 2,105.04

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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.