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Finding the Fourth Proportional to 5,055.80, 6,976.80 and 2,817.63

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Solution

The fourth proportional to 5,055.80, 6,976.80 and 2,817.63 is: 3,888.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,055.80 : 6,976.80 = 2,817.63 : x
  2. Step 2: Convert to fraction form
    5,055.80/6,976.80 = 2,817.63/x
  3. Step 3: Cross multiply
    5,055.80x = 6,976.80 × 2,817.63
  4. Step 4: Simplify right side
    5,055.80x = 19,658,040.98
  5. Step 5: Solve for x
    x = 19,658,040.98/5,055.80
  6. Step 6: Final answer
    x = 3,888.22

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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.