Home / 3,109.13-4,291.01-1,782.58

Finding the Fourth Proportional to 3,109.13, 4,291.01 and 1,782.58

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Solution

The fourth proportional to 3,109.13, 4,291.01 and 1,782.58 is: 2,460.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.13 : 4,291.01 = 1,782.58 : x
  2. Step 2: Convert to fraction form
    3,109.13/4,291.01 = 1,782.58/x
  3. Step 3: Cross multiply
    3,109.13x = 4,291.01 × 1,782.58
  4. Step 4: Simplify right side
    3,109.13x = 7,649,044.92
  5. Step 5: Solve for x
    x = 7,649,044.92/3,109.13
  6. Step 6: Final answer
    x = 2,460.19

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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.