Home / 2,139.88-2,953.08-1,195.62

Finding the Fourth Proportional to 2,139.88, 2,953.08 and 1,195.62

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Solution

The fourth proportional to 2,139.88, 2,953.08 and 1,195.62 is: 1,649.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.88 : 2,953.08 = 1,195.62 : x
  2. Step 2: Convert to fraction form
    2,139.88/2,953.08 = 1,195.62/x
  3. Step 3: Cross multiply
    2,139.88x = 2,953.08 × 1,195.62
  4. Step 4: Simplify right side
    2,139.88x = 3,530,761.51
  5. Step 5: Solve for x
    x = 3,530,761.51/2,139.88
  6. Step 6: Final answer
    x = 1,649.98

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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.