Home / 1,943.80-2,915.12-557.04

Finding the Fourth Proportional to 1,943.80, 2,915.12 and 557.04

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Solution

The fourth proportional to 1,943.80, 2,915.12 and 557.04 is: 835.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.80 : 2,915.12 = 557.04 : x
  2. Step 2: Convert to fraction form
    1,943.80/2,915.12 = 557.04/x
  3. Step 3: Cross multiply
    1,943.80x = 2,915.12 × 557.04
  4. Step 4: Simplify right side
    1,943.80x = 1,623,838.44
  5. Step 5: Solve for x
    x = 1,623,838.44/1,943.80
  6. Step 6: Final answer
    x = 835.39

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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.