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Finding the Fourth Proportional to 6,379.61, 8,804.40 and 3,547.19

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Solution

The fourth proportional to 6,379.61, 8,804.40 and 3,547.19 is: 4,895.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,379.61 : 8,804.40 = 3,547.19 : x
  2. Step 2: Convert to fraction form
    6,379.61/8,804.40 = 3,547.19/x
  3. Step 3: Cross multiply
    6,379.61x = 8,804.40 × 3,547.19
  4. Step 4: Simplify right side
    6,379.61x = 31,230,879.64
  5. Step 5: Solve for x
    x = 31,230,879.64/6,379.61
  6. Step 6: Final answer
    x = 4,895.42

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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.