Home / 5,485.86-7,570.62-3,128.04

Finding the Fourth Proportional to 5,485.86, 7,570.62 and 3,128.04

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Solution

The fourth proportional to 5,485.86, 7,570.62 and 3,128.04 is: 4,316.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.86 : 7,570.62 = 3,128.04 : x
  2. Step 2: Convert to fraction form
    5,485.86/7,570.62 = 3,128.04/x
  3. Step 3: Cross multiply
    5,485.86x = 7,570.62 × 3,128.04
  4. Step 4: Simplify right side
    5,485.86x = 23,681,202.18
  5. Step 5: Solve for x
    x = 23,681,202.18/5,485.86
  6. Step 6: Final answer
    x = 4,316.77

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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.