Home / 4,271.40-6,401.70-3,115.80

Finding the Fourth Proportional to 4,271.40, 6,401.70 and 3,115.80

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Solution

The fourth proportional to 4,271.40, 6,401.70 and 3,115.80 is: 4,669.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,271.40 : 6,401.70 = 3,115.80 : x
  2. Step 2: Convert to fraction form
    4,271.40/6,401.70 = 3,115.80/x
  3. Step 3: Cross multiply
    4,271.40x = 6,401.70 × 3,115.80
  4. Step 4: Simplify right side
    4,271.40x = 19,946,416.86
  5. Step 5: Solve for x
    x = 19,946,416.86/4,271.40
  6. Step 6: Final answer
    x = 4,669.76

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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.