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Finding the Fourth Proportional to 2,607.19, 3,910.82 and 875.81

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Solution

The fourth proportional to 2,607.19, 3,910.82 and 875.81 is: 1,313.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,607.19 : 3,910.82 = 875.81 : x
  2. Step 2: Convert to fraction form
    2,607.19/3,910.82 = 875.81/x
  3. Step 3: Cross multiply
    2,607.19x = 3,910.82 × 875.81
  4. Step 4: Simplify right side
    2,607.19x = 3,425,140.66
  5. Step 5: Solve for x
    x = 3,425,140.66/2,607.19
  6. Step 6: Final answer
    x = 1,313.73

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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.