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Finding the Fourth Proportional to 5,899.20, 8,848.80 and 5,812.80

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Solution

The fourth proportional to 5,899.20, 8,848.80 and 5,812.80 is: 8,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,899.20 : 8,848.80 = 5,812.80 : x
  2. Step 2: Convert to fraction form
    5,899.20/8,848.80 = 5,812.80/x
  3. Step 3: Cross multiply
    5,899.20x = 8,848.80 × 5,812.80
  4. Step 4: Simplify right side
    5,899.20x = 51,436,304.64
  5. Step 5: Solve for x
    x = 51,436,304.64/5,899.20
  6. Step 6: Final answer
    x = 8,719.20

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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.