Home / 8,412.87-11,611.81-4,878.12

Finding the Fourth Proportional to 8,412.87, 11,611.81 and 4,878.12

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Solution

The fourth proportional to 8,412.87, 11,611.81 and 4,878.12 is: 6,732.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412.87 : 11,611.81 = 4,878.12 : x
  2. Step 2: Convert to fraction form
    8,412.87/11,611.81 = 4,878.12/x
  3. Step 3: Cross multiply
    8,412.87x = 11,611.81 × 4,878.12
  4. Step 4: Simplify right side
    8,412.87x = 56,643,802.60
  5. Step 5: Solve for x
    x = 56,643,802.60/8,412.87
  6. Step 6: Final answer
    x = 6,732.99

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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.