Home / 1,943.90-2,915.45-556.98

Finding the Fourth Proportional to 1,943.90, 2,915.45 and 556.98

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Solution

The fourth proportional to 1,943.90, 2,915.45 and 556.98 is: 835.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,943.90 : 2,915.45 = 556.98 : x
  2. Step 2: Convert to fraction form
    1,943.90/2,915.45 = 556.98/x
  3. Step 3: Cross multiply
    1,943.90x = 2,915.45 × 556.98
  4. Step 4: Simplify right side
    1,943.90x = 1,623,847.34
  5. Step 5: Solve for x
    x = 1,623,847.34/1,943.90
  6. Step 6: Final answer
    x = 835.36

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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.