Home / 2,155.45-3,229.05-1,458.70

Finding the Fourth Proportional to 2,155.45, 3,229.05 and 1,458.70

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Solution

The fourth proportional to 2,155.45, 3,229.05 and 1,458.70 is: 2,185.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.45 : 3,229.05 = 1,458.70 : x
  2. Step 2: Convert to fraction form
    2,155.45/3,229.05 = 1,458.70/x
  3. Step 3: Cross multiply
    2,155.45x = 3,229.05 × 1,458.70
  4. Step 4: Simplify right side
    2,155.45x = 4,710,215.24
  5. Step 5: Solve for x
    x = 4,710,215.24/2,155.45
  6. Step 6: Final answer
    x = 2,185.26

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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.