Home / 2,090.30-3,116.55-1,982.30

Finding the Fourth Proportional to 2,090.30, 3,116.55 and 1,982.30

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Solution

The fourth proportional to 2,090.30, 3,116.55 and 1,982.30 is: 2,955.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.30 : 3,116.55 = 1,982.30 : x
  2. Step 2: Convert to fraction form
    2,090.30/3,116.55 = 1,982.30/x
  3. Step 3: Cross multiply
    2,090.30x = 3,116.55 × 1,982.30
  4. Step 4: Simplify right side
    2,090.30x = 6,177,927.15
  5. Step 5: Solve for x
    x = 6,177,927.15/2,090.30
  6. Step 6: Final answer
    x = 2,955.52

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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.