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Finding the Fourth Proportional to 6,379.89, 8,803.18 and 3,547.18

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Solution

The fourth proportional to 6,379.89, 8,803.18 and 3,547.18 is: 4,894.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,379.89 : 8,803.18 = 3,547.18 : x
  2. Step 2: Convert to fraction form
    6,379.89/8,803.18 = 3,547.18/x
  3. Step 3: Cross multiply
    6,379.89x = 8,803.18 × 3,547.18
  4. Step 4: Simplify right side
    6,379.89x = 31,226,446.30
  5. Step 5: Solve for x
    x = 31,226,446.30/6,379.89
  6. Step 6: Final answer
    x = 4,894.52

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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.