Home / 2,529.38-3,489.29-1,690.35

Finding the Fourth Proportional to 2,529.38, 3,489.29 and 1,690.35

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Solution

The fourth proportional to 2,529.38, 3,489.29 and 1,690.35 is: 2,331.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,529.38 : 3,489.29 = 1,690.35 : x
  2. Step 2: Convert to fraction form
    2,529.38/3,489.29 = 1,690.35/x
  3. Step 3: Cross multiply
    2,529.38x = 3,489.29 × 1,690.35
  4. Step 4: Simplify right side
    2,529.38x = 5,898,125.48
  5. Step 5: Solve for x
    x = 5,898,125.48/2,529.38
  6. Step 6: Final answer
    x = 2,331.84

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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.