Home / 1,905.31-2,853.91-1,124.47

Finding the Fourth Proportional to 1,905.31, 2,853.91 and 1,124.47

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Solution

The fourth proportional to 1,905.31, 2,853.91 and 1,124.47 is: 1,684.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.31 : 2,853.91 = 1,124.47 : x
  2. Step 2: Convert to fraction form
    1,905.31/2,853.91 = 1,124.47/x
  3. Step 3: Cross multiply
    1,905.31x = 2,853.91 × 1,124.47
  4. Step 4: Simplify right side
    1,905.31x = 3,209,136.18
  5. Step 5: Solve for x
    x = 3,209,136.18/1,905.31
  6. Step 6: Final answer
    x = 1,684.31

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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.