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Finding the Fourth Proportional to 7,485.67, 11,230.13 and 2,805.49

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Solution

The fourth proportional to 7,485.67, 11,230.13 and 2,805.49 is: 4,208.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.67 : 11,230.13 = 2,805.49 : x
  2. Step 2: Convert to fraction form
    7,485.67/11,230.13 = 2,805.49/x
  3. Step 3: Cross multiply
    7,485.67x = 11,230.13 × 2,805.49
  4. Step 4: Simplify right side
    7,485.67x = 31,506,017.41
  5. Step 5: Solve for x
    x = 31,506,017.41/7,485.67
  6. Step 6: Final answer
    x = 4,208.84

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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.