Home / 2,148.12-3,222.18-1,561.68

Finding the Fourth Proportional to 2,148.12, 3,222.18 and 1,561.68

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Solution

The fourth proportional to 2,148.12, 3,222.18 and 1,561.68 is: 2,342.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.12 : 3,222.18 = 1,561.68 : x
  2. Step 2: Convert to fraction form
    2,148.12/3,222.18 = 1,561.68/x
  3. Step 3: Cross multiply
    2,148.12x = 3,222.18 × 1,561.68
  4. Step 4: Simplify right side
    2,148.12x = 5,032,014.06
  5. Step 5: Solve for x
    x = 5,032,014.06/2,148.12
  6. Step 6: Final answer
    x = 2,342.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.