Home / 2,152.30-3,228.45-1,720.30

Finding the Fourth Proportional to 2,152.30, 3,228.45 and 1,720.30

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Solution

The fourth proportional to 2,152.30, 3,228.45 and 1,720.30 is: 2,580.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.30 : 3,228.45 = 1,720.30 : x
  2. Step 2: Convert to fraction form
    2,152.30/3,228.45 = 1,720.30/x
  3. Step 3: Cross multiply
    2,152.30x = 3,228.45 × 1,720.30
  4. Step 4: Simplify right side
    2,152.30x = 5,553,902.54
  5. Step 5: Solve for x
    x = 5,553,902.54/2,152.30
  6. Step 6: Final answer
    x = 2,580.45

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1.5x scale

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.