Home / 3,102.74-4,281.85-1,686.50

Finding the Fourth Proportional to 3,102.74, 4,281.85 and 1,686.50

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Solution

The fourth proportional to 3,102.74, 4,281.85 and 1,686.50 is: 2,327.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.74 : 4,281.85 = 1,686.50 : x
  2. Step 2: Convert to fraction form
    3,102.74/4,281.85 = 1,686.50/x
  3. Step 3: Cross multiply
    3,102.74x = 4,281.85 × 1,686.50
  4. Step 4: Simplify right side
    3,102.74x = 7,221,331.59
  5. Step 5: Solve for x
    x = 7,221,331.59/3,102.74
  6. Step 6: Final answer
    x = 2,327.41

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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.