Home / 1,911.36-2,638.56-1,248.24

Finding the Fourth Proportional to 1,911.36, 2,638.56 and 1,248.24

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Solution

The fourth proportional to 1,911.36, 2,638.56 and 1,248.24 is: 1,723.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.36 : 2,638.56 = 1,248.24 : x
  2. Step 2: Convert to fraction form
    1,911.36/2,638.56 = 1,248.24/x
  3. Step 3: Cross multiply
    1,911.36x = 2,638.56 × 1,248.24
  4. Step 4: Simplify right side
    1,911.36x = 3,293,556.13
  5. Step 5: Solve for x
    x = 3,293,556.13/1,911.36
  6. Step 6: Final answer
    x = 1,723.15

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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.