Home / 8,412.78-12,619.35-4,705.80

Finding the Fourth Proportional to 8,412.78, 12,619.35 and 4,705.80

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Solution

The fourth proportional to 8,412.78, 12,619.35 and 4,705.80 is: 7,058.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412.78 : 12,619.35 = 4,705.80 : x
  2. Step 2: Convert to fraction form
    8,412.78/12,619.35 = 4,705.80/x
  3. Step 3: Cross multiply
    8,412.78x = 12,619.35 × 4,705.80
  4. Step 4: Simplify right side
    8,412.78x = 59,384,137.23
  5. Step 5: Solve for x
    x = 59,384,137.23/8,412.78
  6. Step 6: Final answer
    x = 7,058.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.