Home / 4,327.29-6,490.89-1,405.71

Finding the Fourth Proportional to 4,327.29, 6,490.89 and 1,405.71

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Solution

The fourth proportional to 4,327.29, 6,490.89 and 1,405.71 is: 2,108.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,327.29 : 6,490.89 = 1,405.71 : x
  2. Step 2: Convert to fraction form
    4,327.29/6,490.89 = 1,405.71/x
  3. Step 3: Cross multiply
    4,327.29x = 6,490.89 × 1,405.71
  4. Step 4: Simplify right side
    4,327.29x = 9,124,308.98
  5. Step 5: Solve for x
    x = 9,124,308.98/4,327.29
  6. Step 6: Final answer
    x = 2,108.55

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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.