Home / 2,770.42-3,828.05-2,215.47

Finding the Fourth Proportional to 2,770.42, 3,828.05 and 2,215.47

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Solution

The fourth proportional to 2,770.42, 3,828.05 and 2,215.47 is: 3,061.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.42 : 3,828.05 = 2,215.47 : x
  2. Step 2: Convert to fraction form
    2,770.42/3,828.05 = 2,215.47/x
  3. Step 3: Cross multiply
    2,770.42x = 3,828.05 × 2,215.47
  4. Step 4: Simplify right side
    2,770.42x = 8,480,929.93
  5. Step 5: Solve for x
    x = 8,480,929.93/2,770.42
  6. Step 6: Final answer
    x = 3,061.24

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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.