Home / 3,119.43-4,677.49-1,039.21

Finding the Fourth Proportional to 3,119.43, 4,677.49 and 1,039.21

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Solution

The fourth proportional to 3,119.43, 4,677.49 and 1,039.21 is: 1,558.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.43 : 4,677.49 = 1,039.21 : x
  2. Step 2: Convert to fraction form
    3,119.43/4,677.49 = 1,039.21/x
  3. Step 3: Cross multiply
    3,119.43x = 4,677.49 × 1,039.21
  4. Step 4: Simplify right side
    3,119.43x = 4,860,894.38
  5. Step 5: Solve for x
    x = 4,860,894.38/3,119.43
  6. Step 6: Final answer
    x = 1,558.26

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1.5x scale

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.