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Finding the Fourth Proportional to 5,390.53, 8,086.02 and 1,880.89

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Solution

The fourth proportional to 5,390.53, 8,086.02 and 1,880.89 is: 2,821.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.53 : 8,086.02 = 1,880.89 : x
  2. Step 2: Convert to fraction form
    5,390.53/8,086.02 = 1,880.89/x
  3. Step 3: Cross multiply
    5,390.53x = 8,086.02 × 1,880.89
  4. Step 4: Simplify right side
    5,390.53x = 15,208,914.16
  5. Step 5: Solve for x
    x = 15,208,914.16/5,390.53
  6. Step 6: Final answer
    x = 2,821.41

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1.5x scale

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.