Home / 1,268.18-1,902.24-651.52

Finding the Fourth Proportional to 1,268.18, 1,902.24 and 651.52

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Solution

The fourth proportional to 1,268.18, 1,902.24 and 651.52 is: 977.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.18 : 1,902.24 = 651.52 : x
  2. Step 2: Convert to fraction form
    1,268.18/1,902.24 = 651.52/x
  3. Step 3: Cross multiply
    1,268.18x = 1,902.24 × 651.52
  4. Step 4: Simplify right side
    1,268.18x = 1,239,347.40
  5. Step 5: Solve for x
    x = 1,239,347.40/1,268.18
  6. Step 6: Final answer
    x = 977.27

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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.