Home / 4,419.20-6,628.80-3,690.20

Finding the Fourth Proportional to 4,419.20, 6,628.80 and 3,690.20

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Solution

The fourth proportional to 4,419.20, 6,628.80 and 3,690.20 is: 5,535.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,419.20 : 6,628.80 = 3,690.20 : x
  2. Step 2: Convert to fraction form
    4,419.20/6,628.80 = 3,690.20/x
  3. Step 3: Cross multiply
    4,419.20x = 6,628.80 × 3,690.20
  4. Step 4: Simplify right side
    4,419.20x = 24,461,597.76
  5. Step 5: Solve for x
    x = 24,461,597.76/4,419.20
  6. Step 6: Final answer
    x = 5,535.30

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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.