Home / 2,089.40-3,134.77-1,257.36

Finding the Fourth Proportional to 2,089.40, 3,134.77 and 1,257.36

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Solution

The fourth proportional to 2,089.40, 3,134.77 and 1,257.36 is: 1,886.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.40 : 3,134.77 = 1,257.36 : x
  2. Step 2: Convert to fraction form
    2,089.40/3,134.77 = 1,257.36/x
  3. Step 3: Cross multiply
    2,089.40x = 3,134.77 × 1,257.36
  4. Step 4: Simplify right side
    2,089.40x = 3,941,519.51
  5. Step 5: Solve for x
    x = 3,941,519.51/2,089.40
  6. Step 6: Final answer
    x = 1,886.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.