Home / 5,121.79-7,068.14-2,883.67

Finding the Fourth Proportional to 5,121.79, 7,068.14 and 2,883.67

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Solution

The fourth proportional to 5,121.79, 7,068.14 and 2,883.67 is: 3,979.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.79 : 7,068.14 = 2,883.67 : x
  2. Step 2: Convert to fraction form
    5,121.79/7,068.14 = 2,883.67/x
  3. Step 3: Cross multiply
    5,121.79x = 7,068.14 × 2,883.67
  4. Step 4: Simplify right side
    5,121.79x = 20,382,168.86
  5. Step 5: Solve for x
    x = 20,382,168.86/5,121.79
  6. Step 6: Final answer
    x = 3,979.50

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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.