Home / 3,102.82-4,281.91-1,686.51

Finding the Fourth Proportional to 3,102.82, 4,281.91 and 1,686.51

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Solution

The fourth proportional to 3,102.82, 4,281.91 and 1,686.51 is: 2,327.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.82 : 4,281.91 = 1,686.51 : x
  2. Step 2: Convert to fraction form
    3,102.82/4,281.91 = 1,686.51/x
  3. Step 3: Cross multiply
    3,102.82x = 4,281.91 × 1,686.51
  4. Step 4: Simplify right side
    3,102.82x = 7,221,484.03
  5. Step 5: Solve for x
    x = 7,221,484.03/3,102.82
  6. Step 6: Final answer
    x = 2,327.40

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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.