Home / 3,931.40-5,898.30-1,336.16

Finding the Fourth Proportional to 3,931.40, 5,898.30 and 1,336.16

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Solution

The fourth proportional to 3,931.40, 5,898.30 and 1,336.16 is: 2,004.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.40 : 5,898.30 = 1,336.16 : x
  2. Step 2: Convert to fraction form
    3,931.40/5,898.30 = 1,336.16/x
  3. Step 3: Cross multiply
    3,931.40x = 5,898.30 × 1,336.16
  4. Step 4: Simplify right side
    3,931.40x = 7,881,072.53
  5. Step 5: Solve for x
    x = 7,881,072.53/3,931.40
  6. Step 6: Final answer
    x = 2,004.65

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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.