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Finding the Fourth Proportional to 4,699.95, 6,485.93 and 2,811.61

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Solution

The fourth proportional to 4,699.95, 6,485.93 and 2,811.61 is: 3,880.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,699.95 : 6,485.93 = 2,811.61 : x
  2. Step 2: Convert to fraction form
    4,699.95/6,485.93 = 2,811.61/x
  3. Step 3: Cross multiply
    4,699.95x = 6,485.93 × 2,811.61
  4. Step 4: Simplify right side
    4,699.95x = 18,235,880.65
  5. Step 5: Solve for x
    x = 18,235,880.65/4,699.95
  6. Step 6: Final answer
    x = 3,880.02

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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.