Home / 2,931.14-4,040.78-2,090.39

Finding the Fourth Proportional to 2,931.14, 4,040.78 and 2,090.39

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Solution

The fourth proportional to 2,931.14, 4,040.78 and 2,090.39 is: 2,881.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.14 : 4,040.78 = 2,090.39 : x
  2. Step 2: Convert to fraction form
    2,931.14/4,040.78 = 2,090.39/x
  3. Step 3: Cross multiply
    2,931.14x = 4,040.78 × 2,090.39
  4. Step 4: Simplify right side
    2,931.14x = 8,446,775.45
  5. Step 5: Solve for x
    x = 8,446,775.45/2,931.14
  6. Step 6: Final answer
    x = 2,881.73

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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.