Home / 1,659.96-2,290.31-1,127.90

Finding the Fourth Proportional to 1,659.96, 2,290.31 and 1,127.90

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Solution

The fourth proportional to 1,659.96, 2,290.31 and 1,127.90 is: 1,556.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.96 : 2,290.31 = 1,127.90 : x
  2. Step 2: Convert to fraction form
    1,659.96/2,290.31 = 1,127.90/x
  3. Step 3: Cross multiply
    1,659.96x = 2,290.31 × 1,127.90
  4. Step 4: Simplify right side
    1,659.96x = 2,583,243.28
  5. Step 5: Solve for x
    x = 2,583,243.28/1,659.96
  6. Step 6: Final answer
    x = 1,556.21

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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.