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Finding the Fourth Proportional to 8,534.20, 12,801.90 and 4,838.20

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Solution

The fourth proportional to 8,534.20, 12,801.90 and 4,838.20 is: 7,257.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,534.20 : 12,801.90 = 4,838.20 : x
  2. Step 2: Convert to fraction form
    8,534.20/12,801.90 = 4,838.20/x
  3. Step 3: Cross multiply
    8,534.20x = 12,801.90 × 4,838.20
  4. Step 4: Simplify right side
    8,534.20x = 61,938,152.58
  5. Step 5: Solve for x
    x = 61,938,152.58/8,534.20
  6. Step 6: Final answer
    x = 7,257.64

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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.