Home / 4,890.80-7,338.52-1,971.12

Finding the Fourth Proportional to 4,890.80, 7,338.52 and 1,971.12

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Solution

The fourth proportional to 4,890.80, 7,338.52 and 1,971.12 is: 2,957.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.80 : 7,338.52 = 1,971.12 : x
  2. Step 2: Convert to fraction form
    4,890.80/7,338.52 = 1,971.12/x
  3. Step 3: Cross multiply
    4,890.80x = 7,338.52 × 1,971.12
  4. Step 4: Simplify right side
    4,890.80x = 14,465,103.54
  5. Step 5: Solve for x
    x = 14,465,103.54/4,890.80
  6. Step 6: Final answer
    x = 2,957.62

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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.