Home / 2,199.34-3,038.92-2,120.53

Finding the Fourth Proportional to 2,199.34, 3,038.92 and 2,120.53

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Solution

The fourth proportional to 2,199.34, 3,038.92 and 2,120.53 is: 2,930.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.34 : 3,038.92 = 2,120.53 : x
  2. Step 2: Convert to fraction form
    2,199.34/3,038.92 = 2,120.53/x
  3. Step 3: Cross multiply
    2,199.34x = 3,038.92 × 2,120.53
  4. Step 4: Simplify right side
    2,199.34x = 6,444,121.03
  5. Step 5: Solve for x
    x = 6,444,121.03/2,199.34
  6. Step 6: Final answer
    x = 2,930.02

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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.