Home / 1,490.31-2,056.59-827.22

Finding the Fourth Proportional to 1,490.31, 2,056.59 and 827.22

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Solution

The fourth proportional to 1,490.31, 2,056.59 and 827.22 is: 1,141.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.31 : 2,056.59 = 827.22 : x
  2. Step 2: Convert to fraction form
    1,490.31/2,056.59 = 827.22/x
  3. Step 3: Cross multiply
    1,490.31x = 2,056.59 × 827.22
  4. Step 4: Simplify right side
    1,490.31x = 1,701,252.38
  5. Step 5: Solve for x
    x = 1,701,252.38/1,490.31
  6. Step 6: Final answer
    x = 1,141.54

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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.