Home / 2,108.40-3,162.60-875.79

Finding the Fourth Proportional to 2,108.40, 3,162.60 and 875.79

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Solution

The fourth proportional to 2,108.40, 3,162.60 and 875.79 is: 1,313.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.40 : 3,162.60 = 875.79 : x
  2. Step 2: Convert to fraction form
    2,108.40/3,162.60 = 875.79/x
  3. Step 3: Cross multiply
    2,108.40x = 3,162.60 × 875.79
  4. Step 4: Simplify right side
    2,108.40x = 2,769,773.45
  5. Step 5: Solve for x
    x = 2,769,773.45/2,108.40
  6. Step 6: Final answer
    x = 1,313.69

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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.