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Finding the Fourth Proportional to 6,479.87, 8,946.52 and 4,985.15

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Solution

The fourth proportional to 6,479.87, 8,946.52 and 4,985.15 is: 6,882.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.87 : 8,946.52 = 4,985.15 : x
  2. Step 2: Convert to fraction form
    6,479.87/8,946.52 = 4,985.15/x
  3. Step 3: Cross multiply
    6,479.87x = 8,946.52 × 4,985.15
  4. Step 4: Simplify right side
    6,479.87x = 44,599,686.98
  5. Step 5: Solve for x
    x = 44,599,686.98/6,479.87
  6. Step 6: Final answer
    x = 6,882.81

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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.