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Finding the Fourth Proportional to 7,940.61, 11,852.93 and 7,362.45

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Solution

The fourth proportional to 7,940.61, 11,852.93 and 7,362.45 is: 10,989.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.61 : 11,852.93 = 7,362.45 : x
  2. Step 2: Convert to fraction form
    7,940.61/11,852.93 = 7,362.45/x
  3. Step 3: Cross multiply
    7,940.61x = 11,852.93 × 7,362.45
  4. Step 4: Simplify right side
    7,940.61x = 87,266,567.67
  5. Step 5: Solve for x
    x = 87,266,567.67/7,940.61
  6. Step 6: Final answer
    x = 10,989.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.