Home / 4,989.21-7,483.86-2,391.54

Finding the Fourth Proportional to 4,989.21, 7,483.86 and 2,391.54

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Solution

The fourth proportional to 4,989.21, 7,483.86 and 2,391.54 is: 3,587.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.21 : 7,483.86 = 2,391.54 : x
  2. Step 2: Convert to fraction form
    4,989.21/7,483.86 = 2,391.54/x
  3. Step 3: Cross multiply
    4,989.21x = 7,483.86 × 2,391.54
  4. Step 4: Simplify right side
    4,989.21x = 17,897,950.54
  5. Step 5: Solve for x
    x = 17,897,950.54/4,989.21
  6. Step 6: Final answer
    x = 3,587.33

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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.