Home / 3,166.08-4,371.36-1,987.68

Finding the Fourth Proportional to 3,166.08, 4,371.36 and 1,987.68

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Solution

The fourth proportional to 3,166.08, 4,371.36 and 1,987.68 is: 2,744.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,166.08 : 4,371.36 = 1,987.68 : x
  2. Step 2: Convert to fraction form
    3,166.08/4,371.36 = 1,987.68/x
  3. Step 3: Cross multiply
    3,166.08x = 4,371.36 × 1,987.68
  4. Step 4: Simplify right side
    3,166.08x = 8,688,864.84
  5. Step 5: Solve for x
    x = 8,688,864.84/3,166.08
  6. Step 6: Final answer
    x = 2,744.36

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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.