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Finding the Fourth Proportional to 9,858.45, 13,596.95 and 6,321.99

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Solution

The fourth proportional to 9,858.45, 13,596.95 and 6,321.99 is: 8,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,858.45 : 13,596.95 = 6,321.99 : x
  2. Step 2: Convert to fraction form
    9,858.45/13,596.95 = 6,321.99/x
  3. Step 3: Cross multiply
    9,858.45x = 13,596.95 × 6,321.99
  4. Step 4: Simplify right side
    9,858.45x = 85,959,750.32
  5. Step 5: Solve for x
    x = 85,959,750.32/9,858.45
  6. Step 6: Final answer
    x = 8,719.40

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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.