Home / 5,647.40-8,456.70-4,178.60

Finding the Fourth Proportional to 5,647.40, 8,456.70 and 4,178.60

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Solution

The fourth proportional to 5,647.40, 8,456.70 and 4,178.60 is: 6,257.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,647.40 : 8,456.70 = 4,178.60 : x
  2. Step 2: Convert to fraction form
    5,647.40/8,456.70 = 4,178.60/x
  3. Step 3: Cross multiply
    5,647.40x = 8,456.70 × 4,178.60
  4. Step 4: Simplify right side
    5,647.40x = 35,337,166.62
  5. Step 5: Solve for x
    x = 35,337,166.62/5,647.40
  6. Step 6: Final answer
    x = 6,257.25

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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.