Home / 3,120.49-4,301.40-2,124.06

Finding the Fourth Proportional to 3,120.49, 4,301.40 and 2,124.06

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Solution

The fourth proportional to 3,120.49, 4,301.40 and 2,124.06 is: 2,927.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.49 : 4,301.40 = 2,124.06 : x
  2. Step 2: Convert to fraction form
    3,120.49/4,301.40 = 2,124.06/x
  3. Step 3: Cross multiply
    3,120.49x = 4,301.40 × 2,124.06
  4. Step 4: Simplify right side
    3,120.49x = 9,136,431.68
  5. Step 5: Solve for x
    x = 9,136,431.68/3,120.49
  6. Step 6: Final answer
    x = 2,927.88

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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.