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Finding the Fourth Proportional to 5,771.88, 8,657.82 and 1,389.34

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Solution

The fourth proportional to 5,771.88, 8,657.82 and 1,389.34 is: 2,084.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,771.88 : 8,657.82 = 1,389.34 : x
  2. Step 2: Convert to fraction form
    5,771.88/8,657.82 = 1,389.34/x
  3. Step 3: Cross multiply
    5,771.88x = 8,657.82 × 1,389.34
  4. Step 4: Simplify right side
    5,771.88x = 12,028,655.64
  5. Step 5: Solve for x
    x = 12,028,655.64/5,771.88
  6. Step 6: Final answer
    x = 2,084.01

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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.