Home / 3,119.65-4,304.37-1,861.18

Finding the Fourth Proportional to 3,119.65, 4,304.37 and 1,861.18

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Solution

The fourth proportional to 3,119.65, 4,304.37 and 1,861.18 is: 2,567.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.65 : 4,304.37 = 1,861.18 : x
  2. Step 2: Convert to fraction form
    3,119.65/4,304.37 = 1,861.18/x
  3. Step 3: Cross multiply
    3,119.65x = 4,304.37 × 1,861.18
  4. Step 4: Simplify right side
    3,119.65x = 8,011,203.58
  5. Step 5: Solve for x
    x = 8,011,203.58/3,119.65
  6. Step 6: Final answer
    x = 2,567.98

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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.