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Finding the Fourth Proportional to 8,858.52, 13,287.72 and 4,912.20

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Solution

The fourth proportional to 8,858.52, 13,287.72 and 4,912.20 is: 7,368.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.52 : 13,287.72 = 4,912.20 : x
  2. Step 2: Convert to fraction form
    8,858.52/13,287.72 = 4,912.20/x
  3. Step 3: Cross multiply
    8,858.52x = 13,287.72 × 4,912.20
  4. Step 4: Simplify right side
    8,858.52x = 65,271,938.18
  5. Step 5: Solve for x
    x = 65,271,938.18/8,858.52
  6. Step 6: Final answer
    x = 7,368.27

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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.