Home / 7,139.24-10,708.55-1,945.11

Finding the Fourth Proportional to 7,139.24, 10,708.55 and 1,945.11

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Solution

The fourth proportional to 7,139.24, 10,708.55 and 1,945.11 is: 2,917.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.24 : 10,708.55 = 1,945.11 : x
  2. Step 2: Convert to fraction form
    7,139.24/10,708.55 = 1,945.11/x
  3. Step 3: Cross multiply
    7,139.24x = 10,708.55 × 1,945.11
  4. Step 4: Simplify right side
    7,139.24x = 20,829,297.96
  5. Step 5: Solve for x
    x = 20,829,297.96/7,139.24
  6. Step 6: Final answer
    x = 2,917.58

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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.