Home / 3,970.07-5,478.18-2,201.67

Finding the Fourth Proportional to 3,970.07, 5,478.18 and 2,201.67

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Solution

The fourth proportional to 3,970.07, 5,478.18 and 2,201.67 is: 3,038.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.07 : 5,478.18 = 2,201.67 : x
  2. Step 2: Convert to fraction form
    3,970.07/5,478.18 = 2,201.67/x
  3. Step 3: Cross multiply
    3,970.07x = 5,478.18 × 2,201.67
  4. Step 4: Simplify right side
    3,970.07x = 12,061,144.56
  5. Step 5: Solve for x
    x = 12,061,144.56/3,970.07
  6. Step 6: Final answer
    x = 3,038.02

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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.