Home / 1,624.20-2,436.84-649.80

Finding the Fourth Proportional to 1,624.20, 2,436.84 and 649.80

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Solution

The fourth proportional to 1,624.20, 2,436.84 and 649.80 is: 974.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,624.20 : 2,436.84 = 649.80 : x
  2. Step 2: Convert to fraction form
    1,624.20/2,436.84 = 649.80/x
  3. Step 3: Cross multiply
    1,624.20x = 2,436.84 × 649.80
  4. Step 4: Simplify right side
    1,624.20x = 1,583,458.63
  5. Step 5: Solve for x
    x = 1,583,458.63/1,624.20
  6. Step 6: Final answer
    x = 974.92

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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.