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Finding the Fourth Proportional to 6,705.79, 9,247.93 and 4,188.13

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Solution

The fourth proportional to 6,705.79, 9,247.93 and 4,188.13 is: 5,775.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,705.79 : 9,247.93 = 4,188.13 : x
  2. Step 2: Convert to fraction form
    6,705.79/9,247.93 = 4,188.13/x
  3. Step 3: Cross multiply
    6,705.79x = 9,247.93 × 4,188.13
  4. Step 4: Simplify right side
    6,705.79x = 38,731,533.07
  5. Step 5: Solve for x
    x = 38,731,533.07/6,705.79
  6. Step 6: Final answer
    x = 5,775.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.