Home / 2,820.60-3,888.14-2,222.01

Finding the Fourth Proportional to 2,820.60, 3,888.14 and 2,222.01

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Solution

The fourth proportional to 2,820.60, 3,888.14 and 2,222.01 is: 3,062.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.60 : 3,888.14 = 2,222.01 : x
  2. Step 2: Convert to fraction form
    2,820.60/3,888.14 = 2,222.01/x
  3. Step 3: Cross multiply
    2,820.60x = 3,888.14 × 2,222.01
  4. Step 4: Simplify right side
    2,820.60x = 8,639,474.85
  5. Step 5: Solve for x
    x = 8,639,474.85/2,820.60
  6. Step 6: Final answer
    x = 3,062.99

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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.