Home / 2,230.61-3,078.23-1,235.95

Finding the Fourth Proportional to 2,230.61, 3,078.23 and 1,235.95

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Solution

The fourth proportional to 2,230.61, 3,078.23 and 1,235.95 is: 1,705.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.61 : 3,078.23 = 1,235.95 : x
  2. Step 2: Convert to fraction form
    2,230.61/3,078.23 = 1,235.95/x
  3. Step 3: Cross multiply
    2,230.61x = 3,078.23 × 1,235.95
  4. Step 4: Simplify right side
    2,230.61x = 3,804,533.76
  5. Step 5: Solve for x
    x = 3,804,533.76/2,230.61
  6. Step 6: Final answer
    x = 1,705.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.