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Finding the Fourth Proportional to 6,838.79, 9,437.37 and 4,005.81

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Solution

The fourth proportional to 6,838.79, 9,437.37 and 4,005.81 is: 5,527.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,838.79 : 9,437.37 = 4,005.81 : x
  2. Step 2: Convert to fraction form
    6,838.79/9,437.37 = 4,005.81/x
  3. Step 3: Cross multiply
    6,838.79x = 9,437.37 × 4,005.81
  4. Step 4: Simplify right side
    6,838.79x = 37,804,311.12
  5. Step 5: Solve for x
    x = 37,804,311.12/6,838.79
  6. Step 6: Final answer
    x = 5,527.93

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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.