Home / 2,555.72-3,528.23-1,720.81

Finding the Fourth Proportional to 2,555.72, 3,528.23 and 1,720.81

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Solution

The fourth proportional to 2,555.72, 3,528.23 and 1,720.81 is: 2,375.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555.72 : 3,528.23 = 1,720.81 : x
  2. Step 2: Convert to fraction form
    2,555.72/3,528.23 = 1,720.81/x
  3. Step 3: Cross multiply
    2,555.72x = 3,528.23 × 1,720.81
  4. Step 4: Simplify right side
    2,555.72x = 6,071,413.47
  5. Step 5: Solve for x
    x = 6,071,413.47/2,555.72
  6. Step 6: Final answer
    x = 2,375.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.