Home / 3,419.36-4,720.20-2,177.36

Finding the Fourth Proportional to 3,419.36, 4,720.20 and 2,177.36

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Solution

The fourth proportional to 3,419.36, 4,720.20 and 2,177.36 is: 3,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.36 : 4,720.20 = 2,177.36 : x
  2. Step 2: Convert to fraction form
    3,419.36/4,720.20 = 2,177.36/x
  3. Step 3: Cross multiply
    3,419.36x = 4,720.20 × 2,177.36
  4. Step 4: Simplify right side
    3,419.36x = 10,277,574.67
  5. Step 5: Solve for x
    x = 10,277,574.67/3,419.36
  6. Step 6: Final answer
    x = 3,005.70

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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.