Home / 9,415.96-12,995.58-5,225.56

Finding the Fourth Proportional to 9,415.96, 12,995.58 and 5,225.56

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Solution

The fourth proportional to 9,415.96, 12,995.58 and 5,225.56 is: 7,212.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,415.96 : 12,995.58 = 5,225.56 : x
  2. Step 2: Convert to fraction form
    9,415.96/12,995.58 = 5,225.56/x
  3. Step 3: Cross multiply
    9,415.96x = 12,995.58 × 5,225.56
  4. Step 4: Simplify right side
    9,415.96x = 67,909,183.02
  5. Step 5: Solve for x
    x = 67,909,183.02/9,415.96
  6. Step 6: Final answer
    x = 7,212.14

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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.