Home / 1,954.74-2,929.47-720.97

Finding the Fourth Proportional to 1,954.74, 2,929.47 and 720.97

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Solution

The fourth proportional to 1,954.74, 2,929.47 and 720.97 is: 1,080.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.74 : 2,929.47 = 720.97 : x
  2. Step 2: Convert to fraction form
    1,954.74/2,929.47 = 720.97/x
  3. Step 3: Cross multiply
    1,954.74x = 2,929.47 × 720.97
  4. Step 4: Simplify right side
    1,954.74x = 2,112,059.99
  5. Step 5: Solve for x
    x = 2,112,059.99/1,954.74
  6. Step 6: Final answer
    x = 1,080.48

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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.