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Finding the Fourth Proportional to 6,339.95, 8,749.12 and 3,545.45

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Solution

The fourth proportional to 6,339.95, 8,749.12 and 3,545.45 is: 4,892.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,339.95 : 8,749.12 = 3,545.45 : x
  2. Step 2: Convert to fraction form
    6,339.95/8,749.12 = 3,545.45/x
  3. Step 3: Cross multiply
    6,339.95x = 8,749.12 × 3,545.45
  4. Step 4: Simplify right side
    6,339.95x = 31,019,514.89
  5. Step 5: Solve for x
    x = 31,019,514.89/6,339.95
  6. Step 6: Final answer
    x = 4,892.71

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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.