Home / 7,415.28-11,117.04-3,715.56

Finding the Fourth Proportional to 7,415.28, 11,117.04 and 3,715.56

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Solution

The fourth proportional to 7,415.28, 11,117.04 and 3,715.56 is: 5,570.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.28 : 11,117.04 = 3,715.56 : x
  2. Step 2: Convert to fraction form
    7,415.28/11,117.04 = 3,715.56/x
  3. Step 3: Cross multiply
    7,415.28x = 11,117.04 × 3,715.56
  4. Step 4: Simplify right side
    7,415.28x = 41,306,029.14
  5. Step 5: Solve for x
    x = 41,306,029.14/7,415.28
  6. Step 6: Final answer
    x = 5,570.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.