Home / 5,245.51-7,238.72-2,887.65

Finding the Fourth Proportional to 5,245.51, 7,238.72 and 2,887.65

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Solution

The fourth proportional to 5,245.51, 7,238.72 and 2,887.65 is: 3,984.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.51 : 7,238.72 = 2,887.65 : x
  2. Step 2: Convert to fraction form
    5,245.51/7,238.72 = 2,887.65/x
  3. Step 3: Cross multiply
    5,245.51x = 7,238.72 × 2,887.65
  4. Step 4: Simplify right side
    5,245.51x = 20,902,880.78
  5. Step 5: Solve for x
    x = 20,902,880.78/5,245.51
  6. Step 6: Final answer
    x = 3,984.91

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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.