Home / 2,145.51-3,215.52-2,101.77

Finding the Fourth Proportional to 2,145.51, 3,215.52 and 2,101.77

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Solution

The fourth proportional to 2,145.51, 3,215.52 and 2,101.77 is: 3,149.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.51 : 3,215.52 = 2,101.77 : x
  2. Step 2: Convert to fraction form
    2,145.51/3,215.52 = 2,101.77/x
  3. Step 3: Cross multiply
    2,145.51x = 3,215.52 × 2,101.77
  4. Step 4: Simplify right side
    2,145.51x = 6,758,283.47
  5. Step 5: Solve for x
    x = 6,758,283.47/2,145.51
  6. Step 6: Final answer
    x = 3,149.97

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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.