Home / 1,450.76-2,176.38-720.36

Finding the Fourth Proportional to 1,450.76, 2,176.38 and 720.36

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Solution

The fourth proportional to 1,450.76, 2,176.38 and 720.36 is: 1,080.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450.76 : 2,176.38 = 720.36 : x
  2. Step 2: Convert to fraction form
    1,450.76/2,176.38 = 720.36/x
  3. Step 3: Cross multiply
    1,450.76x = 2,176.38 × 720.36
  4. Step 4: Simplify right side
    1,450.76x = 1,567,777.10
  5. Step 5: Solve for x
    x = 1,567,777.10/1,450.76
  6. Step 6: Final answer
    x = 1,080.66

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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.