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Finding the Fourth Proportional to 7,294.80, 10,913.40 and 6,603.60

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Solution

The fourth proportional to 7,294.80, 10,913.40 and 6,603.60 is: 9,879.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,294.80 : 10,913.40 = 6,603.60 : x
  2. Step 2: Convert to fraction form
    7,294.80/10,913.40 = 6,603.60/x
  3. Step 3: Cross multiply
    7,294.80x = 10,913.40 × 6,603.60
  4. Step 4: Simplify right side
    7,294.80x = 72,067,728.24
  5. Step 5: Solve for x
    x = 72,067,728.24/7,294.80
  6. Step 6: Final answer
    x = 9,879.33

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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.