Home / 1,767.58-2,439.21-981.57

Finding the Fourth Proportional to 1,767.58, 2,439.21 and 981.57

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Solution

The fourth proportional to 1,767.58, 2,439.21 and 981.57 is: 1,354.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,767.58 : 2,439.21 = 981.57 : x
  2. Step 2: Convert to fraction form
    1,767.58/2,439.21 = 981.57/x
  3. Step 3: Cross multiply
    1,767.58x = 2,439.21 × 981.57
  4. Step 4: Simplify right side
    1,767.58x = 2,394,254.73
  5. Step 5: Solve for x
    x = 2,394,254.73/1,767.58
  6. Step 6: Final answer
    x = 1,354.54

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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.