Home / 3,619.47-5,423.01-2,431.29

Finding the Fourth Proportional to 3,619.47, 5,423.01 and 2,431.29

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Solution

The fourth proportional to 3,619.47, 5,423.01 and 2,431.29 is: 3,642.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.47 : 5,423.01 = 2,431.29 : x
  2. Step 2: Convert to fraction form
    3,619.47/5,423.01 = 2,431.29/x
  3. Step 3: Cross multiply
    3,619.47x = 5,423.01 × 2,431.29
  4. Step 4: Simplify right side
    3,619.47x = 13,184,909.98
  5. Step 5: Solve for x
    x = 13,184,909.98/3,619.47
  6. Step 6: Final answer
    x = 3,642.77

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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.