Home / 2,108.47-3,162.44-875.55

Finding the Fourth Proportional to 2,108.47, 3,162.44 and 875.55

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Solution

The fourth proportional to 2,108.47, 3,162.44 and 875.55 is: 1,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.47 : 3,162.44 = 875.55 : x
  2. Step 2: Convert to fraction form
    2,108.47/3,162.44 = 875.55/x
  3. Step 3: Cross multiply
    2,108.47x = 3,162.44 × 875.55
  4. Step 4: Simplify right side
    2,108.47x = 2,768,874.34
  5. Step 5: Solve for x
    x = 2,768,874.34/2,108.47
  6. Step 6: Final answer
    x = 1,313.21

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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.