Home / 3,113.59-4,669.36-1,138.77

Finding the Fourth Proportional to 3,113.59, 4,669.36 and 1,138.77

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Solution

The fourth proportional to 3,113.59, 4,669.36 and 1,138.77 is: 1,707.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.59 : 4,669.36 = 1,138.77 : x
  2. Step 2: Convert to fraction form
    3,113.59/4,669.36 = 1,138.77/x
  3. Step 3: Cross multiply
    3,113.59x = 4,669.36 × 1,138.77
  4. Step 4: Simplify right side
    3,113.59x = 5,317,327.09
  5. Step 5: Solve for x
    x = 5,317,327.09/3,113.59
  6. Step 6: Final answer
    x = 1,707.78

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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.