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Finding the Fourth Proportional to 9,895.86, 13,656.60 and 6,363.90

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Solution

The fourth proportional to 9,895.86, 13,656.60 and 6,363.90 is: 8,782.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,895.86 : 13,656.60 = 6,363.90 : x
  2. Step 2: Convert to fraction form
    9,895.86/13,656.60 = 6,363.90/x
  3. Step 3: Cross multiply
    9,895.86x = 13,656.60 × 6,363.90
  4. Step 4: Simplify right side
    9,895.86x = 86,909,236.74
  5. Step 5: Solve for x
    x = 86,909,236.74/9,895.86
  6. Step 6: Final answer
    x = 8,782.38

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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.