Home / 3,031.34-4,182.88-1,911.86

Finding the Fourth Proportional to 3,031.34, 4,182.88 and 1,911.86

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Solution

The fourth proportional to 3,031.34, 4,182.88 and 1,911.86 is: 2,638.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.34 : 4,182.88 = 1,911.86 : x
  2. Step 2: Convert to fraction form
    3,031.34/4,182.88 = 1,911.86/x
  3. Step 3: Cross multiply
    3,031.34x = 4,182.88 × 1,911.86
  4. Step 4: Simplify right side
    3,031.34x = 7,997,050.48
  5. Step 5: Solve for x
    x = 7,997,050.48/3,031.34
  6. Step 6: Final answer
    x = 2,638.12

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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.