Home / 2,772.02-4,158.90-1,211.30

Finding the Fourth Proportional to 2,772.02, 4,158.90 and 1,211.30

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Solution

The fourth proportional to 2,772.02, 4,158.90 and 1,211.30 is: 1,817.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.02 : 4,158.90 = 1,211.30 : x
  2. Step 2: Convert to fraction form
    2,772.02/4,158.90 = 1,211.30/x
  3. Step 3: Cross multiply
    2,772.02x = 4,158.90 × 1,211.30
  4. Step 4: Simplify right side
    2,772.02x = 5,037,675.57
  5. Step 5: Solve for x
    x = 5,037,675.57/2,772.02
  6. Step 6: Final answer
    x = 1,817.33

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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.