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Finding the Fourth Proportional to 6,260.80, 9,390.72 and 1,643.68

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Solution

The fourth proportional to 6,260.80, 9,390.72 and 1,643.68 is: 2,465.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,260.80 : 9,390.72 = 1,643.68 : x
  2. Step 2: Convert to fraction form
    6,260.80/9,390.72 = 1,643.68/x
  3. Step 3: Cross multiply
    6,260.80x = 9,390.72 × 1,643.68
  4. Step 4: Simplify right side
    6,260.80x = 15,435,338.65
  5. Step 5: Solve for x
    x = 15,435,338.65/6,260.80
  6. Step 6: Final answer
    x = 2,465.39

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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.