Home / 2,122.40-3,184.28-1,347.23

Finding the Fourth Proportional to 2,122.40, 3,184.28 and 1,347.23

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Solution

The fourth proportional to 2,122.40, 3,184.28 and 1,347.23 is: 2,021.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.40 : 3,184.28 = 1,347.23 : x
  2. Step 2: Convert to fraction form
    2,122.40/3,184.28 = 1,347.23/x
  3. Step 3: Cross multiply
    2,122.40x = 3,184.28 × 1,347.23
  4. Step 4: Simplify right side
    2,122.40x = 4,289,950.81
  5. Step 5: Solve for x
    x = 4,289,950.81/2,122.40
  6. Step 6: Final answer
    x = 2,021.27

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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.