Home / 7,515.72-10,370.81-4,158.09

Finding the Fourth Proportional to 7,515.72, 10,370.81 and 4,158.09

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Solution

The fourth proportional to 7,515.72, 10,370.81 and 4,158.09 is: 5,737.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,515.72 : 10,370.81 = 4,158.09 : x
  2. Step 2: Convert to fraction form
    7,515.72/10,370.81 = 4,158.09/x
  3. Step 3: Cross multiply
    7,515.72x = 10,370.81 × 4,158.09
  4. Step 4: Simplify right side
    7,515.72x = 43,122,740.56
  5. Step 5: Solve for x
    x = 43,122,740.56/7,515.72
  6. Step 6: Final answer
    x = 5,737.67

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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.