Home / 3,806.90-5,711.36-1,615.70

Finding the Fourth Proportional to 3,806.90, 5,711.36 and 1,615.70

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Solution

The fourth proportional to 3,806.90, 5,711.36 and 1,615.70 is: 2,423.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,806.90 : 5,711.36 = 1,615.70 : x
  2. Step 2: Convert to fraction form
    3,806.90/5,711.36 = 1,615.70/x
  3. Step 3: Cross multiply
    3,806.90x = 5,711.36 × 1,615.70
  4. Step 4: Simplify right side
    3,806.90x = 9,227,807.72
  5. Step 5: Solve for x
    x = 9,227,807.72/3,806.90
  6. Step 6: Final answer
    x = 2,423.97

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1.5x scale

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.