Home / 2,726.40-4,089.56-1,686.64

Finding the Fourth Proportional to 2,726.40, 4,089.56 and 1,686.64

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Solution

The fourth proportional to 2,726.40, 4,089.56 and 1,686.64 is: 2,529.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,726.40 : 4,089.56 = 1,686.64 : x
  2. Step 2: Convert to fraction form
    2,726.40/4,089.56 = 1,686.64/x
  3. Step 3: Cross multiply
    2,726.40x = 4,089.56 × 1,686.64
  4. Step 4: Simplify right side
    2,726.40x = 6,897,615.48
  5. Step 5: Solve for x
    x = 6,897,615.48/2,726.40
  6. Step 6: Final answer
    x = 2,529.94

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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.