Home / 3,101.95-4,282.37-2,261.76

Finding the Fourth Proportional to 3,101.95, 4,282.37 and 2,261.76

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Solution

The fourth proportional to 3,101.95, 4,282.37 and 2,261.76 is: 3,122.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.95 : 4,282.37 = 2,261.76 : x
  2. Step 2: Convert to fraction form
    3,101.95/4,282.37 = 2,261.76/x
  3. Step 3: Cross multiply
    3,101.95x = 4,282.37 × 2,261.76
  4. Step 4: Simplify right side
    3,101.95x = 9,685,693.17
  5. Step 5: Solve for x
    x = 9,685,693.17/3,101.95
  6. Step 6: Final answer
    x = 3,122.45

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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.