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Finding the Fourth Proportional to 9,114.80, 13,661.40 and 6,803.60

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Solution

The fourth proportional to 9,114.80, 13,661.40 and 6,803.60 is: 10,197.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,114.80 : 13,661.40 = 6,803.60 : x
  2. Step 2: Convert to fraction form
    9,114.80/13,661.40 = 6,803.60/x
  3. Step 3: Cross multiply
    9,114.80x = 13,661.40 × 6,803.60
  4. Step 4: Simplify right side
    9,114.80x = 92,946,701.04
  5. Step 5: Solve for x
    x = 92,946,701.04/9,114.80
  6. Step 6: Final answer
    x = 10,197.34

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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.