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Finding the Fourth Proportional to 7,899.95, 11,852.13 and 3,458.00

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Solution

The fourth proportional to 7,899.95, 11,852.13 and 3,458.00 is: 5,187.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.95 : 11,852.13 = 3,458.00 : x
  2. Step 2: Convert to fraction form
    7,899.95/11,852.13 = 3,458.00/x
  3. Step 3: Cross multiply
    7,899.95x = 11,852.13 × 3,458.00
  4. Step 4: Simplify right side
    7,899.95x = 40,984,663.69
  5. Step 5: Solve for x
    x = 40,984,663.69/7,899.95
  6. Step 6: Final answer
    x = 5,187.97

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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.