Home / 3,720.48-5,133.40-2,228.12

Finding the Fourth Proportional to 3,720.48, 5,133.40 and 2,228.12

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Solution

The fourth proportional to 3,720.48, 5,133.40 and 2,228.12 is: 3,074.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.48 : 5,133.40 = 2,228.12 : x
  2. Step 2: Convert to fraction form
    3,720.48/5,133.40 = 2,228.12/x
  3. Step 3: Cross multiply
    3,720.48x = 5,133.40 × 2,228.12
  4. Step 4: Simplify right side
    3,720.48x = 11,437,831.21
  5. Step 5: Solve for x
    x = 11,437,831.21/3,720.48
  6. Step 6: Final answer
    x = 3,074.29

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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.