Home / 2,236.80-3,084.60-1,490.78

Finding the Fourth Proportional to 2,236.80, 3,084.60 and 1,490.78

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Solution

The fourth proportional to 2,236.80, 3,084.60 and 1,490.78 is: 2,055.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,236.80 : 3,084.60 = 1,490.78 : x
  2. Step 2: Convert to fraction form
    2,236.80/3,084.60 = 1,490.78/x
  3. Step 3: Cross multiply
    2,236.80x = 3,084.60 × 1,490.78
  4. Step 4: Simplify right side
    2,236.80x = 4,598,459.99
  5. Step 5: Solve for x
    x = 4,598,459.99/2,236.80
  6. Step 6: Final answer
    x = 2,055.82

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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.