Home / 1,622.19-2,239.94-1,540.65

Finding the Fourth Proportional to 1,622.19, 2,239.94 and 1,540.65

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Solution

The fourth proportional to 1,622.19, 2,239.94 and 1,540.65 is: 2,127.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.19 : 2,239.94 = 1,540.65 : x
  2. Step 2: Convert to fraction form
    1,622.19/2,239.94 = 1,540.65/x
  3. Step 3: Cross multiply
    1,622.19x = 2,239.94 × 1,540.65
  4. Step 4: Simplify right side
    1,622.19x = 3,450,955.86
  5. Step 5: Solve for x
    x = 3,450,955.86/1,622.19
  6. Step 6: Final answer
    x = 2,127.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.