Home / 3,291.40-4,911.63-2,940.93

Finding the Fourth Proportional to 3,291.40, 4,911.63 and 2,940.93

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Solution

The fourth proportional to 3,291.40, 4,911.63 and 2,940.93 is: 4,388.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.40 : 4,911.63 = 2,940.93 : x
  2. Step 2: Convert to fraction form
    3,291.40/4,911.63 = 2,940.93/x
  3. Step 3: Cross multiply
    3,291.40x = 4,911.63 × 2,940.93
  4. Step 4: Simplify right side
    3,291.40x = 14,444,720.75
  5. Step 5: Solve for x
    x = 14,444,720.75/3,291.40
  6. Step 6: Final answer
    x = 4,388.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.