Home / 1,442.61-2,157.71-1,262.79

Finding the Fourth Proportional to 1,442.61, 2,157.71 and 1,262.79

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Solution

The fourth proportional to 1,442.61, 2,157.71 and 1,262.79 is: 1,888.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.61 : 2,157.71 = 1,262.79 : x
  2. Step 2: Convert to fraction form
    1,442.61/2,157.71 = 1,262.79/x
  3. Step 3: Cross multiply
    1,442.61x = 2,157.71 × 1,262.79
  4. Step 4: Simplify right side
    1,442.61x = 2,724,728.30
  5. Step 5: Solve for x
    x = 2,724,728.30/1,442.61
  6. Step 6: Final answer
    x = 1,888.75

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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.