Home / 7,515.20-10,370.56-4,157.82

Finding the Fourth Proportional to 7,515.20, 10,370.56 and 4,157.82

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Solution

The fourth proportional to 7,515.20, 10,370.56 and 4,157.82 is: 5,737.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,515.20 : 10,370.56 = 4,157.82 : x
  2. Step 2: Convert to fraction form
    7,515.20/10,370.56 = 4,157.82/x
  3. Step 3: Cross multiply
    7,515.20x = 10,370.56 × 4,157.82
  4. Step 4: Simplify right side
    7,515.20x = 43,118,921.78
  5. Step 5: Solve for x
    x = 43,118,921.78/7,515.20
  6. Step 6: Final answer
    x = 5,737.56

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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.