Home / 1,953.97-2,928.90-720.59

Finding the Fourth Proportional to 1,953.97, 2,928.90 and 720.59

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Solution

The fourth proportional to 1,953.97, 2,928.90 and 720.59 is: 1,080.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.97 : 2,928.90 = 720.59 : x
  2. Step 2: Convert to fraction form
    1,953.97/2,928.90 = 720.59/x
  3. Step 3: Cross multiply
    1,953.97x = 2,928.90 × 720.59
  4. Step 4: Simplify right side
    1,953.97x = 2,110,536.05
  5. Step 5: Solve for x
    x = 2,110,536.05/1,953.97
  6. Step 6: Final answer
    x = 1,080.13

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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.