Home / 9,078.58-13,605.20-4,909.60

Finding the Fourth Proportional to 9,078.58, 13,605.20 and 4,909.60

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Solution

The fourth proportional to 9,078.58, 13,605.20 and 4,909.60 is: 7,357.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.58 : 13,605.20 = 4,909.60 : x
  2. Step 2: Convert to fraction form
    9,078.58/13,605.20 = 4,909.60/x
  3. Step 3: Cross multiply
    9,078.58x = 13,605.20 × 4,909.60
  4. Step 4: Simplify right side
    9,078.58x = 66,796,089.92
  5. Step 5: Solve for x
    x = 66,796,089.92/9,078.58
  6. Step 6: Final answer
    x = 7,357.55

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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.