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Finding the Fourth Proportional to 2,087.36, 3,131.12 and 933

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Solution

The fourth proportional to 2,087.36, 3,131.12 and 933 is: 1,399.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.36 : 3,131.12 = 933 : x
  2. Step 2: Convert to fraction form
    2,087.36/3,131.12 = 933/x
  3. Step 3: Cross multiply
    2,087.36x = 3,131.12 × 933
  4. Step 4: Simplify right side
    2,087.36x = 2,921,334.96
  5. Step 5: Solve for x
    x = 2,921,334.96/2,087.36
  6. Step 6: Final answer
    x = 1,399.54

Related Problems

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.