Home / 3,005.80-4,148.14-1,679.50

Finding the Fourth Proportional to 3,005.80, 4,148.14 and 1,679.50

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Solution

The fourth proportional to 3,005.80, 4,148.14 and 1,679.50 is: 2,317.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.80 : 4,148.14 = 1,679.50 : x
  2. Step 2: Convert to fraction form
    3,005.80/4,148.14 = 1,679.50/x
  3. Step 3: Cross multiply
    3,005.80x = 4,148.14 × 1,679.50
  4. Step 4: Simplify right side
    3,005.80x = 6,966,801.13
  5. Step 5: Solve for x
    x = 6,966,801.13/3,005.80
  6. Step 6: Final answer
    x = 2,317.79

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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.