Home / 1,651.70-2,279.94-1,127.36

Finding the Fourth Proportional to 1,651.70, 2,279.94 and 1,127.36

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Solution

The fourth proportional to 1,651.70, 2,279.94 and 1,127.36 is: 1,556.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.70 : 2,279.94 = 1,127.36 : x
  2. Step 2: Convert to fraction form
    1,651.70/2,279.94 = 1,127.36/x
  3. Step 3: Cross multiply
    1,651.70x = 2,279.94 × 1,127.36
  4. Step 4: Simplify right side
    1,651.70x = 2,570,313.16
  5. Step 5: Solve for x
    x = 2,570,313.16/1,651.70
  6. Step 6: Final answer
    x = 1,556.16

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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.