Home / 2,136.02-3,203.84-981.77

Finding the Fourth Proportional to 2,136.02, 3,203.84 and 981.77

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Solution

The fourth proportional to 2,136.02, 3,203.84 and 981.77 is: 1,472.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.02 : 3,203.84 = 981.77 : x
  2. Step 2: Convert to fraction form
    2,136.02/3,203.84 = 981.77/x
  3. Step 3: Cross multiply
    2,136.02x = 3,203.84 × 981.77
  4. Step 4: Simplify right side
    2,136.02x = 3,145,420.43
  5. Step 5: Solve for x
    x = 3,145,420.43/2,136.02
  6. Step 6: Final answer
    x = 1,472.56

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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.