Home / 2,885.35-3,979.16-1,890.26

Finding the Fourth Proportional to 2,885.35, 3,979.16 and 1,890.26

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Solution

The fourth proportional to 2,885.35, 3,979.16 and 1,890.26 is: 2,606.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.35 : 3,979.16 = 1,890.26 : x
  2. Step 2: Convert to fraction form
    2,885.35/3,979.16 = 1,890.26/x
  3. Step 3: Cross multiply
    2,885.35x = 3,979.16 × 1,890.26
  4. Step 4: Simplify right side
    2,885.35x = 7,521,646.98
  5. Step 5: Solve for x
    x = 7,521,646.98/2,885.35
  6. Step 6: Final answer
    x = 2,606.84

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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.