Home / 3,478.95-5,219.15-1,138.77

Finding the Fourth Proportional to 3,478.95, 5,219.15 and 1,138.77

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Solution

The fourth proportional to 3,478.95, 5,219.15 and 1,138.77 is: 1,708.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.95 : 5,219.15 = 1,138.77 : x
  2. Step 2: Convert to fraction form
    3,478.95/5,219.15 = 1,138.77/x
  3. Step 3: Cross multiply
    3,478.95x = 5,219.15 × 1,138.77
  4. Step 4: Simplify right side
    3,478.95x = 5,943,403.58
  5. Step 5: Solve for x
    x = 5,943,403.58/3,478.95
  6. Step 6: Final answer
    x = 1,708.39

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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.