Home / 1,620.15-2,429.70-524.28

Finding the Fourth Proportional to 1,620.15, 2,429.70 and 524.28

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Solution

The fourth proportional to 1,620.15, 2,429.70 and 524.28 is: 786.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.15 : 2,429.70 = 524.28 : x
  2. Step 2: Convert to fraction form
    1,620.15/2,429.70 = 524.28/x
  3. Step 3: Cross multiply
    1,620.15x = 2,429.70 × 524.28
  4. Step 4: Simplify right side
    1,620.15x = 1,273,843.12
  5. Step 5: Solve for x
    x = 1,273,843.12/1,620.15
  6. Step 6: Final answer
    x = 786.25

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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.