Home / 2,072.30-2,859.74-1,140.80

Finding the Fourth Proportional to 2,072.30, 2,859.74 and 1,140.80

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Solution

The fourth proportional to 2,072.30, 2,859.74 and 1,140.80 is: 1,574.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.30 : 2,859.74 = 1,140.80 : x
  2. Step 2: Convert to fraction form
    2,072.30/2,859.74 = 1,140.80/x
  3. Step 3: Cross multiply
    2,072.30x = 2,859.74 × 1,140.80
  4. Step 4: Simplify right side
    2,072.30x = 3,262,391.39
  5. Step 5: Solve for x
    x = 3,262,391.39/2,072.30
  6. Step 6: Final answer
    x = 1,574.29

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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.