Home / 2,842.08-3,923.28-1,911.12

Finding the Fourth Proportional to 2,842.08, 3,923.28 and 1,911.12

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Solution

The fourth proportional to 2,842.08, 3,923.28 and 1,911.12 is: 2,638.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,842.08 : 3,923.28 = 1,911.12 : x
  2. Step 2: Convert to fraction form
    2,842.08/3,923.28 = 1,911.12/x
  3. Step 3: Cross multiply
    2,842.08x = 3,923.28 × 1,911.12
  4. Step 4: Simplify right side
    2,842.08x = 7,497,858.87
  5. Step 5: Solve for x
    x = 7,497,858.87/2,842.08
  6. Step 6: Final answer
    x = 2,638.16

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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.