Home / 1,953.01-2,928.14-720.26

Finding the Fourth Proportional to 1,953.01, 2,928.14 and 720.26

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Solution

The fourth proportional to 1,953.01, 2,928.14 and 720.26 is: 1,079.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.01 : 2,928.14 = 720.26 : x
  2. Step 2: Convert to fraction form
    1,953.01/2,928.14 = 720.26/x
  3. Step 3: Cross multiply
    1,953.01x = 2,928.14 × 720.26
  4. Step 4: Simplify right side
    1,953.01x = 2,109,007.48
  5. Step 5: Solve for x
    x = 2,109,007.48/1,953.01
  6. Step 6: Final answer
    x = 1,079.88

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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.