Home / 1,720.13-2,578.63-623.73

Finding the Fourth Proportional to 1,720.13, 2,578.63 and 623.73

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Solution

The fourth proportional to 1,720.13, 2,578.63 and 623.73 is: 935.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.13 : 2,578.63 = 623.73 : x
  2. Step 2: Convert to fraction form
    1,720.13/2,578.63 = 623.73/x
  3. Step 3: Cross multiply
    1,720.13x = 2,578.63 × 623.73
  4. Step 4: Simplify right side
    1,720.13x = 1,608,368.89
  5. Step 5: Solve for x
    x = 1,608,368.89/1,720.13
  6. Step 6: Final answer
    x = 935.03

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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.