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Finding the Fourth Proportional to 5,987.20, 8,266.08 and 5,425.60

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Solution

The fourth proportional to 5,987.20, 8,266.08 and 5,425.60 is: 7,490.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,987.20 : 8,266.08 = 5,425.60 : x
  2. Step 2: Convert to fraction form
    5,987.20/8,266.08 = 5,425.60/x
  3. Step 3: Cross multiply
    5,987.20x = 8,266.08 × 5,425.60
  4. Step 4: Simplify right side
    5,987.20x = 44,848,443.65
  5. Step 5: Solve for x
    x = 44,848,443.65/5,987.20
  6. Step 6: Final answer
    x = 7,490.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.