Home / 2,989.86-4,486.08-1,429.90

Finding the Fourth Proportional to 2,989.86, 4,486.08 and 1,429.90

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Solution

The fourth proportional to 2,989.86, 4,486.08 and 1,429.90 is: 2,145.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.86 : 4,486.08 = 1,429.90 : x
  2. Step 2: Convert to fraction form
    2,989.86/4,486.08 = 1,429.90/x
  3. Step 3: Cross multiply
    2,989.86x = 4,486.08 × 1,429.90
  4. Step 4: Simplify right side
    2,989.86x = 6,414,665.17
  5. Step 5: Solve for x
    x = 6,414,665.17/2,989.86
  6. Step 6: Final answer
    x = 2,145.47

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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.