Home / 3,887.70-5,829.65-1,289.76

Finding the Fourth Proportional to 3,887.70, 5,829.65 and 1,289.76

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Solution

The fourth proportional to 3,887.70, 5,829.65 and 1,289.76 is: 1,934.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.70 : 5,829.65 = 1,289.76 : x
  2. Step 2: Convert to fraction form
    3,887.70/5,829.65 = 1,289.76/x
  3. Step 3: Cross multiply
    3,887.70x = 5,829.65 × 1,289.76
  4. Step 4: Simplify right side
    3,887.70x = 7,518,849.38
  5. Step 5: Solve for x
    x = 7,518,849.38/3,887.70
  6. Step 6: Final answer
    x = 1,934.01

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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.