Home / 2,931.17-4,040.79-2,090.41

Finding the Fourth Proportional to 2,931.17, 4,040.79 and 2,090.41

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Solution

The fourth proportional to 2,931.17, 4,040.79 and 2,090.41 is: 2,881.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.17 : 4,040.79 = 2,090.41 : x
  2. Step 2: Convert to fraction form
    2,931.17/4,040.79 = 2,090.41/x
  3. Step 3: Cross multiply
    2,931.17x = 4,040.79 × 2,090.41
  4. Step 4: Simplify right side
    2,931.17x = 8,446,889.88
  5. Step 5: Solve for x
    x = 8,446,889.88/2,931.17
  6. Step 6: Final answer
    x = 2,881.75

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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.