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Finding the Fourth Proportional to 6,245.12, 8,618 and 3,412.59

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Solution

The fourth proportional to 6,245.12, 8,618 and 3,412.59 is: 4,709.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,245.12 : 8,618 = 3,412.59 : x
  2. Step 2: Convert to fraction form
    6,245.12/8,618 = 3,412.59/x
  3. Step 3: Cross multiply
    6,245.12x = 8,618 × 3,412.59
  4. Step 4: Simplify right side
    6,245.12x = 29,409,657.53
  5. Step 5: Solve for x
    x = 29,409,657.53/6,245.12
  6. Step 6: Final answer
    x = 4,709.23

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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.