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Finding the Fourth Proportional to 4,813.79, 7,218.86 and 1,890.50

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Solution

The fourth proportional to 4,813.79, 7,218.86 and 1,890.50 is: 2,835.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,813.79 : 7,218.86 = 1,890.50 : x
  2. Step 2: Convert to fraction form
    4,813.79/7,218.86 = 1,890.50/x
  3. Step 3: Cross multiply
    4,813.79x = 7,218.86 × 1,890.50
  4. Step 4: Simplify right side
    4,813.79x = 13,647,254.83
  5. Step 5: Solve for x
    x = 13,647,254.83/4,813.79
  6. Step 6: Final answer
    x = 2,835.03

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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.