Home / 2,435.12-3,639.34-1,778.38

Finding the Fourth Proportional to 2,435.12, 3,639.34 and 1,778.38

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Solution

The fourth proportional to 2,435.12, 3,639.34 and 1,778.38 is: 2,657.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,435.12 : 3,639.34 = 1,778.38 : x
  2. Step 2: Convert to fraction form
    2,435.12/3,639.34 = 1,778.38/x
  3. Step 3: Cross multiply
    2,435.12x = 3,639.34 × 1,778.38
  4. Step 4: Simplify right side
    2,435.12x = 6,472,129.57
  5. Step 5: Solve for x
    x = 6,472,129.57/2,435.12
  6. Step 6: Final answer
    x = 2,657.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.