Home / 8,171.40-12,257.10-4,705.80

Finding the Fourth Proportional to 8,171.40, 12,257.10 and 4,705.80

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Solution

The fourth proportional to 8,171.40, 12,257.10 and 4,705.80 is: 7,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,171.40 : 12,257.10 = 4,705.80 : x
  2. Step 2: Convert to fraction form
    8,171.40/12,257.10 = 4,705.80/x
  3. Step 3: Cross multiply
    8,171.40x = 12,257.10 × 4,705.80
  4. Step 4: Simplify right side
    8,171.40x = 57,679,461.18
  5. Step 5: Solve for x
    x = 57,679,461.18/8,171.40
  6. Step 6: Final answer
    x = 7,058.70

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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.