Home / 1,453.85-2,006.81-981.44

Finding the Fourth Proportional to 1,453.85, 2,006.81 and 981.44

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Solution

The fourth proportional to 1,453.85, 2,006.81 and 981.44 is: 1,354.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.85 : 2,006.81 = 981.44 : x
  2. Step 2: Convert to fraction form
    1,453.85/2,006.81 = 981.44/x
  3. Step 3: Cross multiply
    1,453.85x = 2,006.81 × 981.44
  4. Step 4: Simplify right side
    1,453.85x = 1,969,563.61
  5. Step 5: Solve for x
    x = 1,969,563.61/1,453.85
  6. Step 6: Final answer
    x = 1,354.72

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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.