Home / 2,861.65-4,289.59-1,011.21

Finding the Fourth Proportional to 2,861.65, 4,289.59 and 1,011.21

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Solution

The fourth proportional to 2,861.65, 4,289.59 and 1,011.21 is: 1,515.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.65 : 4,289.59 = 1,011.21 : x
  2. Step 2: Convert to fraction form
    2,861.65/4,289.59 = 1,011.21/x
  3. Step 3: Cross multiply
    2,861.65x = 4,289.59 × 1,011.21
  4. Step 4: Simplify right side
    2,861.65x = 4,337,676.30
  5. Step 5: Solve for x
    x = 4,337,676.30/2,861.65
  6. Step 6: Final answer
    x = 1,515.80

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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.