Home / 1,620.90-2,433.15-1,005.30

Finding the Fourth Proportional to 1,620.90, 2,433.15 and 1,005.30

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Solution

The fourth proportional to 1,620.90, 2,433.15 and 1,005.30 is: 1,509.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.90 : 2,433.15 = 1,005.30 : x
  2. Step 2: Convert to fraction form
    1,620.90/2,433.15 = 1,005.30/x
  3. Step 3: Cross multiply
    1,620.90x = 2,433.15 × 1,005.30
  4. Step 4: Simplify right side
    1,620.90x = 2,446,045.70
  5. Step 5: Solve for x
    x = 2,446,045.70/1,620.90
  6. Step 6: Final answer
    x = 1,509.07

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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.