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Finding the Fourth Proportional to 7,813.87, 10,779.48 and 4,626.92

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Solution

The fourth proportional to 7,813.87, 10,779.48 and 4,626.92 is: 6,382.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.87 : 10,779.48 = 4,626.92 : x
  2. Step 2: Convert to fraction form
    7,813.87/10,779.48 = 4,626.92/x
  3. Step 3: Cross multiply
    7,813.87x = 10,779.48 × 4,626.92
  4. Step 4: Simplify right side
    7,813.87x = 49,875,818.55
  5. Step 5: Solve for x
    x = 49,875,818.55/7,813.87
  6. Step 6: Final answer
    x = 6,382.99

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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.