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Finding the Fourth Proportional to 5,391.51, 7,400.54 and 4,788.87

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Solution

The fourth proportional to 5,391.51, 7,400.54 and 4,788.87 is: 6,573.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.51 : 7,400.54 = 4,788.87 : x
  2. Step 2: Convert to fraction form
    5,391.51/7,400.54 = 4,788.87/x
  3. Step 3: Cross multiply
    5,391.51x = 7,400.54 × 4,788.87
  4. Step 4: Simplify right side
    5,391.51x = 35,440,200.05
  5. Step 5: Solve for x
    x = 35,440,200.05/5,391.51
  6. Step 6: Final answer
    x = 6,573.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.