Home / 2,285.15-3,427.19-985.91

Finding the Fourth Proportional to 2,285.15, 3,427.19 and 985.91

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Solution

The fourth proportional to 2,285.15, 3,427.19 and 985.91 is: 1,478.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.15 : 3,427.19 = 985.91 : x
  2. Step 2: Convert to fraction form
    2,285.15/3,427.19 = 985.91/x
  3. Step 3: Cross multiply
    2,285.15x = 3,427.19 × 985.91
  4. Step 4: Simplify right side
    2,285.15x = 3,378,895.96
  5. Step 5: Solve for x
    x = 3,378,895.96/2,285.15
  6. Step 6: Final answer
    x = 1,478.63

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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.