Home / 3,090.34-4,637.20-1,311.13

Finding the Fourth Proportional to 3,090.34, 4,637.20 and 1,311.13

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Solution

The fourth proportional to 3,090.34, 4,637.20 and 1,311.13 is: 1,967.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.34 : 4,637.20 = 1,311.13 : x
  2. Step 2: Convert to fraction form
    3,090.34/4,637.20 = 1,311.13/x
  3. Step 3: Cross multiply
    3,090.34x = 4,637.20 × 1,311.13
  4. Step 4: Simplify right side
    3,090.34x = 6,079,969.52
  5. Step 5: Solve for x
    x = 6,079,969.52/3,090.34
  6. Step 6: Final answer
    x = 1,967.41

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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.