Home / 3,651.47-5,478.36-1,309.87

Finding the Fourth Proportional to 3,651.47, 5,478.36 and 1,309.87

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Solution

The fourth proportional to 3,651.47, 5,478.36 and 1,309.87 is: 1,965.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,651.47 : 5,478.36 = 1,309.87 : x
  2. Step 2: Convert to fraction form
    3,651.47/5,478.36 = 1,309.87/x
  3. Step 3: Cross multiply
    3,651.47x = 5,478.36 × 1,309.87
  4. Step 4: Simplify right side
    3,651.47x = 7,175,939.41
  5. Step 5: Solve for x
    x = 7,175,939.41/3,651.47
  6. Step 6: Final answer
    x = 1,965.22

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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.