Home / 5,055-6,976.38-2,817.18

Finding the Fourth Proportional to 5,055, 6,976.38 and 2,817.18

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Solution

The fourth proportional to 5,055, 6,976.38 and 2,817.18 is: 3,887.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,055 : 6,976.38 = 2,817.18 : x
  2. Step 2: Convert to fraction form
    5,055/6,976.38 = 2,817.18/x
  3. Step 3: Cross multiply
    5,055x = 6,976.38 × 2,817.18
  4. Step 4: Simplify right side
    5,055x = 19,653,718.21
  5. Step 5: Solve for x
    x = 19,653,718.21/5,055
  6. Step 6: Final answer
    x = 3,887.98

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Double scale
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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.