Home / 9,209.44-12,709.20-5,485.60

Finding the Fourth Proportional to 9,209.44, 12,709.20 and 5,485.60

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Solution

The fourth proportional to 9,209.44, 12,709.20 and 5,485.60 is: 7,570.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,209.44 : 12,709.20 = 5,485.60 : x
  2. Step 2: Convert to fraction form
    9,209.44/12,709.20 = 5,485.60/x
  3. Step 3: Cross multiply
    9,209.44x = 12,709.20 × 5,485.60
  4. Step 4: Simplify right side
    9,209.44x = 69,717,587.52
  5. Step 5: Solve for x
    x = 69,717,587.52/9,209.44
  6. Step 6: Final answer
    x = 7,570.23

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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.