Home / 3,261.90-4,869-3,119.88

Finding the Fourth Proportional to 3,261.90, 4,869 and 3,119.88

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Solution

The fourth proportional to 3,261.90, 4,869 and 3,119.88 is: 4,657.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,261.90 : 4,869 = 3,119.88 : x
  2. Step 2: Convert to fraction form
    3,261.90/4,869 = 3,119.88/x
  3. Step 3: Cross multiply
    3,261.90x = 4,869 × 3,119.88
  4. Step 4: Simplify right side
    3,261.90x = 15,190,695.72
  5. Step 5: Solve for x
    x = 15,190,695.72/3,261.90
  6. Step 6: Final answer
    x = 4,657.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.