Home / 2,148.06-3,222.60-761.52

Finding the Fourth Proportional to 2,148.06, 3,222.60 and 761.52

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Solution

The fourth proportional to 2,148.06, 3,222.60 and 761.52 is: 1,142.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.06 : 3,222.60 = 761.52 : x
  2. Step 2: Convert to fraction form
    2,148.06/3,222.60 = 761.52/x
  3. Step 3: Cross multiply
    2,148.06x = 3,222.60 × 761.52
  4. Step 4: Simplify right side
    2,148.06x = 2,454,069.74
  5. Step 5: Solve for x
    x = 2,454,069.74/2,148.06
  6. Step 6: Final answer
    x = 1,142.46

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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.