Home / 2,265.42-3,128.66-1,559.09

Finding the Fourth Proportional to 2,265.42, 3,128.66 and 1,559.09

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Solution

The fourth proportional to 2,265.42, 3,128.66 and 1,559.09 is: 2,153.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.42 : 3,128.66 = 1,559.09 : x
  2. Step 2: Convert to fraction form
    2,265.42/3,128.66 = 1,559.09/x
  3. Step 3: Cross multiply
    2,265.42x = 3,128.66 × 1,559.09
  4. Step 4: Simplify right side
    2,265.42x = 4,877,853.74
  5. Step 5: Solve for x
    x = 4,877,853.74/2,265.42
  6. Step 6: Final answer
    x = 2,153.18

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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.