Home / 4,811.10-7,215.15-1,890.30

Finding the Fourth Proportional to 4,811.10, 7,215.15 and 1,890.30

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Solution

The fourth proportional to 4,811.10, 7,215.15 and 1,890.30 is: 2,834.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,811.10 : 7,215.15 = 1,890.30 : x
  2. Step 2: Convert to fraction form
    4,811.10/7,215.15 = 1,890.30/x
  3. Step 3: Cross multiply
    4,811.10x = 7,215.15 × 1,890.30
  4. Step 4: Simplify right side
    4,811.10x = 13,638,798.05
  5. Step 5: Solve for x
    x = 13,638,798.05/4,811.10
  6. Step 6: Final answer
    x = 2,834.86

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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.