Home / 7,715.28-11,574.88-2,168.68

Finding the Fourth Proportional to 7,715.28, 11,574.88 and 2,168.68

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Solution

The fourth proportional to 7,715.28, 11,574.88 and 2,168.68 is: 3,253.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.28 : 11,574.88 = 2,168.68 : x
  2. Step 2: Convert to fraction form
    7,715.28/11,574.88 = 2,168.68/x
  3. Step 3: Cross multiply
    7,715.28x = 11,574.88 × 2,168.68
  4. Step 4: Simplify right side
    7,715.28x = 25,102,210.76
  5. Step 5: Solve for x
    x = 25,102,210.76/7,715.28
  6. Step 6: Final answer
    x = 3,253.57

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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.