Home / 5,187.98-7,159.26-2,830.12

Finding the Fourth Proportional to 5,187.98, 7,159.26 and 2,830.12

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Solution

The fourth proportional to 5,187.98, 7,159.26 and 2,830.12 is: 3,905.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.98 : 7,159.26 = 2,830.12 : x
  2. Step 2: Convert to fraction form
    5,187.98/7,159.26 = 2,830.12/x
  3. Step 3: Cross multiply
    5,187.98x = 7,159.26 × 2,830.12
  4. Step 4: Simplify right side
    5,187.98x = 20,261,564.91
  5. Step 5: Solve for x
    x = 20,261,564.91/5,187.98
  6. Step 6: Final answer
    x = 3,905.48

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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.