Home / 2,931.85-4,400-1,084.71

Finding the Fourth Proportional to 2,931.85, 4,400 and 1,084.71

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Solution

The fourth proportional to 2,931.85, 4,400 and 1,084.71 is: 1,627.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.85 : 4,400 = 1,084.71 : x
  2. Step 2: Convert to fraction form
    2,931.85/4,400 = 1,084.71/x
  3. Step 3: Cross multiply
    2,931.85x = 4,400 × 1,084.71
  4. Step 4: Simplify right side
    2,931.85x = 4,772,724
  5. Step 5: Solve for x
    x = 4,772,724/2,931.85
  6. Step 6: Final answer
    x = 1,627.89

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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.