Home / 3,089.72-4,262.70-2,145.26

Finding the Fourth Proportional to 3,089.72, 4,262.70 and 2,145.26

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Solution

The fourth proportional to 3,089.72, 4,262.70 and 2,145.26 is: 2,959.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,089.72 : 4,262.70 = 2,145.26 : x
  2. Step 2: Convert to fraction form
    3,089.72/4,262.70 = 2,145.26/x
  3. Step 3: Cross multiply
    3,089.72x = 4,262.70 × 2,145.26
  4. Step 4: Simplify right side
    3,089.72x = 9,144,599.80
  5. Step 5: Solve for x
    x = 9,144,599.80/3,089.72
  6. Step 6: Final answer
    x = 2,959.69

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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.