Home / 3,110.01-4,292.40-1,991.42

Finding the Fourth Proportional to 3,110.01, 4,292.40 and 1,991.42

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Solution

The fourth proportional to 3,110.01, 4,292.40 and 1,991.42 is: 2,748.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.01 : 4,292.40 = 1,991.42 : x
  2. Step 2: Convert to fraction form
    3,110.01/4,292.40 = 1,991.42/x
  3. Step 3: Cross multiply
    3,110.01x = 4,292.40 × 1,991.42
  4. Step 4: Simplify right side
    3,110.01x = 8,547,971.21
  5. Step 5: Solve for x
    x = 8,547,971.21/3,110.01
  6. Step 6: Final answer
    x = 2,748.53

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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.