Home / 3,139.48-4,709.25-948.22

Finding the Fourth Proportional to 3,139.48, 4,709.25 and 948.22

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Solution

The fourth proportional to 3,139.48, 4,709.25 and 948.22 is: 1,422.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.48 : 4,709.25 = 948.22 : x
  2. Step 2: Convert to fraction form
    3,139.48/4,709.25 = 948.22/x
  3. Step 3: Cross multiply
    3,139.48x = 4,709.25 × 948.22
  4. Step 4: Simplify right side
    3,139.48x = 4,465,405.04
  5. Step 5: Solve for x
    x = 4,465,405.04/3,139.48
  6. Step 6: Final answer
    x = 1,422.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.