Home / 3,971.91-5,483.04-2,715

Finding the Fourth Proportional to 3,971.91, 5,483.04 and 2,715

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Solution

The fourth proportional to 3,971.91, 5,483.04 and 2,715 is: 3,747.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.91 : 5,483.04 = 2,715 : x
  2. Step 2: Convert to fraction form
    3,971.91/5,483.04 = 2,715/x
  3. Step 3: Cross multiply
    3,971.91x = 5,483.04 × 2,715
  4. Step 4: Simplify right side
    3,971.91x = 14,886,453.60
  5. Step 5: Solve for x
    x = 14,886,453.60/3,971.91
  6. Step 6: Final answer
    x = 3,747.93

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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.