Home / 1,244.48-1,718.24-1,127.20

Finding the Fourth Proportional to 1,244.48, 1,718.24 and 1,127.20

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Solution

The fourth proportional to 1,244.48, 1,718.24 and 1,127.20 is: 1,556.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244.48 : 1,718.24 = 1,127.20 : x
  2. Step 2: Convert to fraction form
    1,244.48/1,718.24 = 1,127.20/x
  3. Step 3: Cross multiply
    1,244.48x = 1,718.24 × 1,127.20
  4. Step 4: Simplify right side
    1,244.48x = 1,936,800.13
  5. Step 5: Solve for x
    x = 1,936,800.13/1,244.48
  6. Step 6: Final answer
    x = 1,556.31

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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.