Home / 3,315.70-4,977.60-3,291.40

Finding the Fourth Proportional to 3,315.70, 4,977.60 and 3,291.40

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Solution

The fourth proportional to 3,315.70, 4,977.60 and 3,291.40 is: 4,941.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.70 : 4,977.60 = 3,291.40 : x
  2. Step 2: Convert to fraction form
    3,315.70/4,977.60 = 3,291.40/x
  3. Step 3: Cross multiply
    3,315.70x = 4,977.60 × 3,291.40
  4. Step 4: Simplify right side
    3,315.70x = 16,383,272.64
  5. Step 5: Solve for x
    x = 16,383,272.64/3,315.70
  6. Step 6: Final answer
    x = 4,941.12

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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.