Home / 3,831.48-5,291.88-2,511.09

Finding the Fourth Proportional to 3,831.48, 5,291.88 and 2,511.09

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Solution

The fourth proportional to 3,831.48, 5,291.88 and 2,511.09 is: 3,468.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.48 : 5,291.88 = 2,511.09 : x
  2. Step 2: Convert to fraction form
    3,831.48/5,291.88 = 2,511.09/x
  3. Step 3: Cross multiply
    3,831.48x = 5,291.88 × 2,511.09
  4. Step 4: Simplify right side
    3,831.48x = 13,288,386.95
  5. Step 5: Solve for x
    x = 13,288,386.95/3,831.48
  6. Step 6: Final answer
    x = 3,468.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.