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Finding the Fourth Proportional to 8,907.90, 12,296.98 and 6,357.60

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Solution

The fourth proportional to 8,907.90, 12,296.98 and 6,357.60 is: 8,776.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.90 : 12,296.98 = 6,357.60 : x
  2. Step 2: Convert to fraction form
    8,907.90/12,296.98 = 6,357.60/x
  3. Step 3: Cross multiply
    8,907.90x = 12,296.98 × 6,357.60
  4. Step 4: Simplify right side
    8,907.90x = 78,179,280.05
  5. Step 5: Solve for x
    x = 78,179,280.05/8,907.90
  6. Step 6: Final answer
    x = 8,776.40

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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.