Home / 1,626.20-2,439.84-651.80

Finding the Fourth Proportional to 1,626.20, 2,439.84 and 651.80

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Solution

The fourth proportional to 1,626.20, 2,439.84 and 651.80 is: 977.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,626.20 : 2,439.84 = 651.80 : x
  2. Step 2: Convert to fraction form
    1,626.20/2,439.84 = 651.80/x
  3. Step 3: Cross multiply
    1,626.20x = 2,439.84 × 651.80
  4. Step 4: Simplify right side
    1,626.20x = 1,590,287.71
  5. Step 5: Solve for x
    x = 1,590,287.71/1,626.20
  6. Step 6: Final answer
    x = 977.92

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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.