Home / 1,450.10-2,172.30-717.45

Finding the Fourth Proportional to 1,450.10, 2,172.30 and 717.45

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Solution

The fourth proportional to 1,450.10, 2,172.30 and 717.45 is: 1,074.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450.10 : 2,172.30 = 717.45 : x
  2. Step 2: Convert to fraction form
    1,450.10/2,172.30 = 717.45/x
  3. Step 3: Cross multiply
    1,450.10x = 2,172.30 × 717.45
  4. Step 4: Simplify right side
    1,450.10x = 1,558,516.64
  5. Step 5: Solve for x
    x = 1,558,516.64/1,450.10
  6. Step 6: Final answer
    x = 1,074.77

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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.