Home / 5,681.50-7,833.76-3,889.85

Finding the Fourth Proportional to 5,681.50, 7,833.76 and 3,889.85

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Solution

The fourth proportional to 5,681.50, 7,833.76 and 3,889.85 is: 5,363.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,681.50 : 7,833.76 = 3,889.85 : x
  2. Step 2: Convert to fraction form
    5,681.50/7,833.76 = 3,889.85/x
  3. Step 3: Cross multiply
    5,681.50x = 7,833.76 × 3,889.85
  4. Step 4: Simplify right side
    5,681.50x = 30,472,102.44
  5. Step 5: Solve for x
    x = 30,472,102.44/5,681.50
  6. Step 6: Final answer
    x = 5,363.39

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1.5x scale

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.