Home / 3,109.25-4,290.96-1,712.00

Finding the Fourth Proportional to 3,109.25, 4,290.96 and 1,712.00

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Solution

The fourth proportional to 3,109.25, 4,290.96 and 1,712.00 is: 2,362.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.25 : 4,290.96 = 1,712.00 : x
  2. Step 2: Convert to fraction form
    3,109.25/4,290.96 = 1,712.00/x
  3. Step 3: Cross multiply
    3,109.25x = 4,290.96 × 1,712.00
  4. Step 4: Simplify right side
    3,109.25x = 7,346,102.07
  5. Step 5: Solve for x
    x = 7,346,102.07/3,109.25
  6. Step 6: Final answer
    x = 2,362.66

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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.