Home / 9,121.89-13,688.97-3,574.54

Finding the Fourth Proportional to 9,121.89, 13,688.97 and 3,574.54

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Solution

The fourth proportional to 9,121.89, 13,688.97 and 3,574.54 is: 5,364.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.89 : 13,688.97 = 3,574.54 : x
  2. Step 2: Convert to fraction form
    9,121.89/13,688.97 = 3,574.54/x
  3. Step 3: Cross multiply
    9,121.89x = 13,688.97 × 3,574.54
  4. Step 4: Simplify right side
    9,121.89x = 48,931,770.82
  5. Step 5: Solve for x
    x = 48,931,770.82/9,121.89
  6. Step 6: Final answer
    x = 5,364.21

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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.