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Finding the Fourth Proportional to 7,485.61, 11,229.86 and 2,868.25

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Solution

The fourth proportional to 7,485.61, 11,229.86 and 2,868.25 is: 4,302.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.61 : 11,229.86 = 2,868.25 : x
  2. Step 2: Convert to fraction form
    7,485.61/11,229.86 = 2,868.25/x
  3. Step 3: Cross multiply
    7,485.61x = 11,229.86 × 2,868.25
  4. Step 4: Simplify right side
    7,485.61x = 32,210,045.95
  5. Step 5: Solve for x
    x = 32,210,045.95/7,485.61
  6. Step 6: Final answer
    x = 4,302.93

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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.