Home / 9,099.45-12,557.21-5,120.57

Finding the Fourth Proportional to 9,099.45, 12,557.21 and 5,120.57

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Solution

The fourth proportional to 9,099.45, 12,557.21 and 5,120.57 is: 7,066.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,099.45 : 12,557.21 = 5,120.57 : x
  2. Step 2: Convert to fraction form
    9,099.45/12,557.21 = 5,120.57/x
  3. Step 3: Cross multiply
    9,099.45x = 12,557.21 × 5,120.57
  4. Step 4: Simplify right side
    9,099.45x = 64,300,072.81
  5. Step 5: Solve for x
    x = 64,300,072.81/9,099.45
  6. Step 6: Final answer
    x = 7,066.37

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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.