Home / 3,318.60-4,977.90-1,763.40

Finding the Fourth Proportional to 3,318.60, 4,977.90 and 1,763.40

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Solution

The fourth proportional to 3,318.60, 4,977.90 and 1,763.40 is: 2,645.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.60 : 4,977.90 = 1,763.40 : x
  2. Step 2: Convert to fraction form
    3,318.60/4,977.90 = 1,763.40/x
  3. Step 3: Cross multiply
    3,318.60x = 4,977.90 × 1,763.40
  4. Step 4: Simplify right side
    3,318.60x = 8,778,028.86
  5. Step 5: Solve for x
    x = 8,778,028.86/3,318.60
  6. Step 6: Final answer
    x = 2,645.10

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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.