Home / 3,005.71-4,148.26-1,679.48

Finding the Fourth Proportional to 3,005.71, 4,148.26 and 1,679.48

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Solution

The fourth proportional to 3,005.71, 4,148.26 and 1,679.48 is: 2,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.71 : 4,148.26 = 1,679.48 : x
  2. Step 2: Convert to fraction form
    3,005.71/4,148.26 = 1,679.48/x
  3. Step 3: Cross multiply
    3,005.71x = 4,148.26 × 1,679.48
  4. Step 4: Simplify right side
    3,005.71x = 6,966,943.10
  5. Step 5: Solve for x
    x = 6,966,943.10/3,005.71
  6. Step 6: Final answer
    x = 2,317.90

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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.