Home / 2,622.40-3,928.38-1,582.68

Finding the Fourth Proportional to 2,622.40, 3,928.38 and 1,582.68

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Solution

The fourth proportional to 2,622.40, 3,928.38 and 1,582.68 is: 2,370.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,622.40 : 3,928.38 = 1,582.68 : x
  2. Step 2: Convert to fraction form
    2,622.40/3,928.38 = 1,582.68/x
  3. Step 3: Cross multiply
    2,622.40x = 3,928.38 × 1,582.68
  4. Step 4: Simplify right side
    2,622.40x = 6,217,368.46
  5. Step 5: Solve for x
    x = 6,217,368.46/2,622.40
  6. Step 6: Final answer
    x = 2,370.87

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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.