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Finding the Fourth Proportional to 7,485.93, 11,228.93 and 1,938.89

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Solution

The fourth proportional to 7,485.93, 11,228.93 and 1,938.89 is: 2,908.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.93 : 11,228.93 = 1,938.89 : x
  2. Step 2: Convert to fraction form
    7,485.93/11,228.93 = 1,938.89/x
  3. Step 3: Cross multiply
    7,485.93x = 11,228.93 × 1,938.89
  4. Step 4: Simplify right side
    7,485.93x = 21,771,608.79
  5. Step 5: Solve for x
    x = 21,771,608.79/7,485.93
  6. Step 6: Final answer
    x = 2,908.34

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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.