Home / 2,108.13-3,163.05-875.31

Finding the Fourth Proportional to 2,108.13, 3,163.05 and 875.31

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Solution

The fourth proportional to 2,108.13, 3,163.05 and 875.31 is: 1,313.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.13 : 3,163.05 = 875.31 : x
  2. Step 2: Convert to fraction form
    2,108.13/3,163.05 = 875.31/x
  3. Step 3: Cross multiply
    2,108.13x = 3,163.05 × 875.31
  4. Step 4: Simplify right side
    2,108.13x = 2,768,637.43
  5. Step 5: Solve for x
    x = 2,768,637.43/2,108.13
  6. Step 6: Final answer
    x = 1,313.32

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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.