Home / 2,801.90-3,866.60-1,543.07

Finding the Fourth Proportional to 2,801.90, 3,866.60 and 1,543.07

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Solution

The fourth proportional to 2,801.90, 3,866.60 and 1,543.07 is: 2,129.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.90 : 3,866.60 = 1,543.07 : x
  2. Step 2: Convert to fraction form
    2,801.90/3,866.60 = 1,543.07/x
  3. Step 3: Cross multiply
    2,801.90x = 3,866.60 × 1,543.07
  4. Step 4: Simplify right side
    2,801.90x = 5,966,407.41
  5. Step 5: Solve for x
    x = 5,966,407.41/2,801.90
  6. Step 6: Final answer
    x = 2,129.42

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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.