Home / 5,108.90-7,661.55-1,822.10

Finding the Fourth Proportional to 5,108.90, 7,661.55 and 1,822.10

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Solution

The fourth proportional to 5,108.90, 7,661.55 and 1,822.10 is: 2,732.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.90 : 7,661.55 = 1,822.10 : x
  2. Step 2: Convert to fraction form
    5,108.90/7,661.55 = 1,822.10/x
  3. Step 3: Cross multiply
    5,108.90x = 7,661.55 × 1,822.10
  4. Step 4: Simplify right side
    5,108.90x = 13,960,110.26
  5. Step 5: Solve for x
    x = 13,960,110.26/5,108.90
  6. Step 6: Final answer
    x = 2,732.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.