Home / 9,099.30-12,556.50-5,120.25

Finding the Fourth Proportional to 9,099.30, 12,556.50 and 5,120.25

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Solution

The fourth proportional to 9,099.30, 12,556.50 and 5,120.25 is: 7,065.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,099.30 : 12,556.50 = 5,120.25 : x
  2. Step 2: Convert to fraction form
    9,099.30/12,556.50 = 5,120.25/x
  3. Step 3: Cross multiply
    9,099.30x = 12,556.50 × 5,120.25
  4. Step 4: Simplify right side
    9,099.30x = 64,292,419.13
  5. Step 5: Solve for x
    x = 64,292,419.13/9,099.30
  6. Step 6: Final answer
    x = 7,065.64

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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.