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Finding the Fourth Proportional to 6,518.70, 8,995.95 and 3,831.88

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Solution

The fourth proportional to 6,518.70, 8,995.95 and 3,831.88 is: 5,288.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,518.70 : 8,995.95 = 3,831.88 : x
  2. Step 2: Convert to fraction form
    6,518.70/8,995.95 = 3,831.88/x
  3. Step 3: Cross multiply
    6,518.70x = 8,995.95 × 3,831.88
  4. Step 4: Simplify right side
    6,518.70x = 34,471,400.89
  5. Step 5: Solve for x
    x = 34,471,400.89/6,518.70
  6. Step 6: Final answer
    x = 5,288.08

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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.