Home / 2,557.11-3,528.79-1,438.06

Finding the Fourth Proportional to 2,557.11, 3,528.79 and 1,438.06

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Solution

The fourth proportional to 2,557.11, 3,528.79 and 1,438.06 is: 1,984.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,557.11 : 3,528.79 = 1,438.06 : x
  2. Step 2: Convert to fraction form
    2,557.11/3,528.79 = 1,438.06/x
  3. Step 3: Cross multiply
    2,557.11x = 3,528.79 × 1,438.06
  4. Step 4: Simplify right side
    2,557.11x = 5,074,604.72
  5. Step 5: Solve for x
    x = 5,074,604.72/2,557.11
  6. Step 6: Final answer
    x = 1,984.51

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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.