Home / 1,490.24-2,056.58-818.00

Finding the Fourth Proportional to 1,490.24, 2,056.58 and 818.00

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Solution

The fourth proportional to 1,490.24, 2,056.58 and 818.00 is: 1,128.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.24 : 2,056.58 = 818.00 : x
  2. Step 2: Convert to fraction form
    1,490.24/2,056.58 = 818.00/x
  3. Step 3: Cross multiply
    1,490.24x = 2,056.58 × 818.00
  4. Step 4: Simplify right side
    1,490.24x = 1,682,268.07
  5. Step 5: Solve for x
    x = 1,682,268.07/1,490.24
  6. Step 6: Final answer
    x = 1,128.86

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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.