Home / 2,222.20-3,065.64-1,558.81

Finding the Fourth Proportional to 2,222.20, 3,065.64 and 1,558.81

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Solution

The fourth proportional to 2,222.20, 3,065.64 and 1,558.81 is: 2,150.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,222.20 : 3,065.64 = 1,558.81 : x
  2. Step 2: Convert to fraction form
    2,222.20/3,065.64 = 1,558.81/x
  3. Step 3: Cross multiply
    2,222.20x = 3,065.64 × 1,558.81
  4. Step 4: Simplify right side
    2,222.20x = 4,778,750.29
  5. Step 5: Solve for x
    x = 4,778,750.29/2,222.20
  6. Step 6: Final answer
    x = 2,150.46

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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.