Home / 2,557.88-3,528.36-1,661.21

Finding the Fourth Proportional to 2,557.88, 3,528.36 and 1,661.21

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Solution

The fourth proportional to 2,557.88, 3,528.36 and 1,661.21 is: 2,291.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,557.88 : 3,528.36 = 1,661.21 : x
  2. Step 2: Convert to fraction form
    2,557.88/3,528.36 = 1,661.21/x
  3. Step 3: Cross multiply
    2,557.88x = 3,528.36 × 1,661.21
  4. Step 4: Simplify right side
    2,557.88x = 5,861,342.51
  5. Step 5: Solve for x
    x = 5,861,342.51/2,557.88
  6. Step 6: Final answer
    x = 2,291.49

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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.