Home / 6,690.79-10,021.60-3,220.75

Finding the Fourth Proportional to 6,690.79, 10,021.60 and 3,220.75

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Solution

The fourth proportional to 6,690.79, 10,021.60 and 3,220.75 is: 4,824.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,690.79 : 10,021.60 = 3,220.75 : x
  2. Step 2: Convert to fraction form
    6,690.79/10,021.60 = 3,220.75/x
  3. Step 3: Cross multiply
    6,690.79x = 10,021.60 × 3,220.75
  4. Step 4: Simplify right side
    6,690.79x = 32,277,068.20
  5. Step 5: Solve for x
    x = 32,277,068.20/6,690.79
  6. Step 6: Final answer
    x = 4,824.10

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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.