Home / 1,624.90-2,242.38-986.66

Finding the Fourth Proportional to 1,624.90, 2,242.38 and 986.66

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Solution

The fourth proportional to 1,624.90, 2,242.38 and 986.66 is: 1,361.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,624.90 : 2,242.38 = 986.66 : x
  2. Step 2: Convert to fraction form
    1,624.90/2,242.38 = 986.66/x
  3. Step 3: Cross multiply
    1,624.90x = 2,242.38 × 986.66
  4. Step 4: Simplify right side
    1,624.90x = 2,212,455.44
  5. Step 5: Solve for x
    x = 2,212,455.44/1,624.90
  6. Step 6: Final answer
    x = 1,361.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.