Home / 2,265.51-3,131.63-1,890.30

Finding the Fourth Proportional to 2,265.51, 3,131.63 and 1,890.30

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Solution

The fourth proportional to 2,265.51, 3,131.63 and 1,890.30 is: 2,612.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.51 : 3,131.63 = 1,890.30 : x
  2. Step 2: Convert to fraction form
    2,265.51/3,131.63 = 1,890.30/x
  3. Step 3: Cross multiply
    2,265.51x = 3,131.63 × 1,890.30
  4. Step 4: Simplify right side
    2,265.51x = 5,919,720.19
  5. Step 5: Solve for x
    x = 5,919,720.19/2,265.51
  6. Step 6: Final answer
    x = 2,612.97

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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.