Home / 2,431.45-3,356.13-1,487.80

Finding the Fourth Proportional to 2,431.45, 3,356.13 and 1,487.80

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Solution

The fourth proportional to 2,431.45, 3,356.13 and 1,487.80 is: 2,053.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.45 : 3,356.13 = 1,487.80 : x
  2. Step 2: Convert to fraction form
    2,431.45/3,356.13 = 1,487.80/x
  3. Step 3: Cross multiply
    2,431.45x = 3,356.13 × 1,487.80
  4. Step 4: Simplify right side
    2,431.45x = 4,993,250.21
  5. Step 5: Solve for x
    x = 4,993,250.21/2,431.45
  6. Step 6: Final answer
    x = 2,053.61

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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.