Home / 4,675.20-7,012.80-4,205.40

Finding the Fourth Proportional to 4,675.20, 7,012.80 and 4,205.40

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Solution

The fourth proportional to 4,675.20, 7,012.80 and 4,205.40 is: 6,308.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,675.20 : 7,012.80 = 4,205.40 : x
  2. Step 2: Convert to fraction form
    4,675.20/7,012.80 = 4,205.40/x
  3. Step 3: Cross multiply
    4,675.20x = 7,012.80 × 4,205.40
  4. Step 4: Simplify right side
    4,675.20x = 29,491,629.12
  5. Step 5: Solve for x
    x = 29,491,629.12/4,675.20
  6. Step 6: Final answer
    x = 6,308.10

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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.