Home / 5,486.22-7,570.95-3,128.31

Finding the Fourth Proportional to 5,486.22, 7,570.95 and 3,128.31

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Solution

The fourth proportional to 5,486.22, 7,570.95 and 3,128.31 is: 4,317.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,486.22 : 7,570.95 = 3,128.31 : x
  2. Step 2: Convert to fraction form
    5,486.22/7,570.95 = 3,128.31/x
  3. Step 3: Cross multiply
    5,486.22x = 7,570.95 × 3,128.31
  4. Step 4: Simplify right side
    5,486.22x = 23,684,278.59
  5. Step 5: Solve for x
    x = 23,684,278.59/5,486.22
  6. Step 6: Final answer
    x = 4,317.05

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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.