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Finding the Fourth Proportional to 7,709.94, 10,639.80 and 4,352.81

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Solution

The fourth proportional to 7,709.94, 10,639.80 and 4,352.81 is: 6,006.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.94 : 10,639.80 = 4,352.81 : x
  2. Step 2: Convert to fraction form
    7,709.94/10,639.80 = 4,352.81/x
  3. Step 3: Cross multiply
    7,709.94x = 10,639.80 × 4,352.81
  4. Step 4: Simplify right side
    7,709.94x = 46,312,974.64
  5. Step 5: Solve for x
    x = 46,312,974.64/7,709.94
  6. Step 6: Final answer
    x = 6,006.92

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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.