Home / 1,281.45-1,921.60-587.96

Finding the Fourth Proportional to 1,281.45, 1,921.60 and 587.96

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Solution

The fourth proportional to 1,281.45, 1,921.60 and 587.96 is: 881.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281.45 : 1,921.60 = 587.96 : x
  2. Step 2: Convert to fraction form
    1,281.45/1,921.60 = 587.96/x
  3. Step 3: Cross multiply
    1,281.45x = 1,921.60 × 587.96
  4. Step 4: Simplify right side
    1,281.45x = 1,129,823.94
  5. Step 5: Solve for x
    x = 1,129,823.94/1,281.45
  6. Step 6: Final answer
    x = 881.68

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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.