Home / 2,072.24-2,859.68-1,140.80

Finding the Fourth Proportional to 2,072.24, 2,859.68 and 1,140.80

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Solution

The fourth proportional to 2,072.24, 2,859.68 and 1,140.80 is: 1,574.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.24 : 2,859.68 = 1,140.80 : x
  2. Step 2: Convert to fraction form
    2,072.24/2,859.68 = 1,140.80/x
  3. Step 3: Cross multiply
    2,072.24x = 2,859.68 × 1,140.80
  4. Step 4: Simplify right side
    2,072.24x = 3,262,322.94
  5. Step 5: Solve for x
    x = 3,262,322.94/2,072.24
  6. Step 6: Final answer
    x = 1,574.30

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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.