Home / 3,890.84-5,831.14-1,581.08

Finding the Fourth Proportional to 3,890.84, 5,831.14 and 1,581.08

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Solution

The fourth proportional to 3,890.84, 5,831.14 and 1,581.08 is: 2,369.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.84 : 5,831.14 = 1,581.08 : x
  2. Step 2: Convert to fraction form
    3,890.84/5,831.14 = 1,581.08/x
  3. Step 3: Cross multiply
    3,890.84x = 5,831.14 × 1,581.08
  4. Step 4: Simplify right side
    3,890.84x = 9,219,498.83
  5. Step 5: Solve for x
    x = 9,219,498.83/3,890.84
  6. Step 6: Final answer
    x = 2,369.54

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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.