Home / 2,057.09-2,838.81-1,172.90

Finding the Fourth Proportional to 2,057.09, 2,838.81 and 1,172.90

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Solution

The fourth proportional to 2,057.09, 2,838.81 and 1,172.90 is: 1,618.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,057.09 : 2,838.81 = 1,172.90 : x
  2. Step 2: Convert to fraction form
    2,057.09/2,838.81 = 1,172.90/x
  3. Step 3: Cross multiply
    2,057.09x = 2,838.81 × 1,172.90
  4. Step 4: Simplify right side
    2,057.09x = 3,329,651.74
  5. Step 5: Solve for x
    x = 3,329,651.74/2,057.09
  6. Step 6: Final answer
    x = 1,618.63

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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.