Home / 7,005.80-10,509.12-2,845.72

Finding the Fourth Proportional to 7,005.80, 10,509.12 and 2,845.72

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Solution

The fourth proportional to 7,005.80, 10,509.12 and 2,845.72 is: 4,268.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,005.80 : 10,509.12 = 2,845.72 : x
  2. Step 2: Convert to fraction form
    7,005.80/10,509.12 = 2,845.72/x
  3. Step 3: Cross multiply
    7,005.80x = 10,509.12 × 2,845.72
  4. Step 4: Simplify right side
    7,005.80x = 29,906,012.97
  5. Step 5: Solve for x
    x = 29,906,012.97/7,005.80
  6. Step 6: Final answer
    x = 4,268.75

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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.