Home / 3,970.29-5,479.01-2,201.86

Finding the Fourth Proportional to 3,970.29, 5,479.01 and 2,201.86

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Solution

The fourth proportional to 3,970.29, 5,479.01 and 2,201.86 is: 3,038.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.29 : 5,479.01 = 2,201.86 : x
  2. Step 2: Convert to fraction form
    3,970.29/5,479.01 = 2,201.86/x
  3. Step 3: Cross multiply
    3,970.29x = 5,479.01 × 2,201.86
  4. Step 4: Simplify right side
    3,970.29x = 12,064,012.96
  5. Step 5: Solve for x
    x = 12,064,012.96/3,970.29
  6. Step 6: Final answer
    x = 3,038.57

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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.