Home / 2,135.38-2,944.58-1,686.51

Finding the Fourth Proportional to 2,135.38, 2,944.58 and 1,686.51

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Solution

The fourth proportional to 2,135.38, 2,944.58 and 1,686.51 is: 2,325.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.38 : 2,944.58 = 1,686.51 : x
  2. Step 2: Convert to fraction form
    2,135.38/2,944.58 = 1,686.51/x
  3. Step 3: Cross multiply
    2,135.38x = 2,944.58 × 1,686.51
  4. Step 4: Simplify right side
    2,135.38x = 4,966,063.62
  5. Step 5: Solve for x
    x = 4,966,063.62/2,135.38
  6. Step 6: Final answer
    x = 2,325.61

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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.