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Finding the Fourth Proportional to 4,485.25, 6,728.24 and 1,407.25

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Solution

The fourth proportional to 4,485.25, 6,728.24 and 1,407.25 is: 2,110.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,485.25 : 6,728.24 = 1,407.25 : x
  2. Step 2: Convert to fraction form
    4,485.25/6,728.24 = 1,407.25/x
  3. Step 3: Cross multiply
    4,485.25x = 6,728.24 × 1,407.25
  4. Step 4: Simplify right side
    4,485.25x = 9,468,315.74
  5. Step 5: Solve for x
    x = 9,468,315.74/4,485.25
  6. Step 6: Final answer
    x = 2,110.99

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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.