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Finding the Fourth Proportional to 6,804.81, 9,390.12 and 3,780.09

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Solution

The fourth proportional to 6,804.81, 9,390.12 and 3,780.09 is: 5,216.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,804.81 : 9,390.12 = 3,780.09 : x
  2. Step 2: Convert to fraction form
    6,804.81/9,390.12 = 3,780.09/x
  3. Step 3: Cross multiply
    6,804.81x = 9,390.12 × 3,780.09
  4. Step 4: Simplify right side
    6,804.81x = 35,495,498.71
  5. Step 5: Solve for x
    x = 35,495,498.71/6,804.81
  6. Step 6: Final answer
    x = 5,216.24

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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.