Home / 3,931.90-5,899.05-1,336.66

Finding the Fourth Proportional to 3,931.90, 5,899.05 and 1,336.66

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Solution

The fourth proportional to 3,931.90, 5,899.05 and 1,336.66 is: 2,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.90 : 5,899.05 = 1,336.66 : x
  2. Step 2: Convert to fraction form
    3,931.90/5,899.05 = 1,336.66/x
  3. Step 3: Cross multiply
    3,931.90x = 5,899.05 × 1,336.66
  4. Step 4: Simplify right side
    3,931.90x = 7,885,024.17
  5. Step 5: Solve for x
    x = 7,885,024.17/3,931.90
  6. Step 6: Final answer
    x = 2,005.40

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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.