Home / 4,311.30-6,461.55-2,115.30

Finding the Fourth Proportional to 4,311.30, 6,461.55 and 2,115.30

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Solution

The fourth proportional to 4,311.30, 6,461.55 and 2,115.30 is: 3,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,311.30 : 6,461.55 = 2,115.30 : x
  2. Step 2: Convert to fraction form
    4,311.30/6,461.55 = 2,115.30/x
  3. Step 3: Cross multiply
    4,311.30x = 6,461.55 × 2,115.30
  4. Step 4: Simplify right side
    4,311.30x = 13,668,116.72
  5. Step 5: Solve for x
    x = 13,668,116.72/4,311.30
  6. Step 6: Final answer
    x = 3,170.30

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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.