Home / 3,970.37-5,479.02-2,201.93

Finding the Fourth Proportional to 3,970.37, 5,479.02 and 2,201.93

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Solution

The fourth proportional to 3,970.37, 5,479.02 and 2,201.93 is: 3,038.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.37 : 5,479.02 = 2,201.93 : x
  2. Step 2: Convert to fraction form
    3,970.37/5,479.02 = 2,201.93/x
  3. Step 3: Cross multiply
    3,970.37x = 5,479.02 × 2,201.93
  4. Step 4: Simplify right side
    3,970.37x = 12,064,432.21
  5. Step 5: Solve for x
    x = 12,064,432.21/3,970.37
  6. Step 6: Final answer
    x = 3,038.62

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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.