Home / 2,825.50-4,235.72-1,438.06

Finding the Fourth Proportional to 2,825.50, 4,235.72 and 1,438.06

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Solution

The fourth proportional to 2,825.50, 4,235.72 and 1,438.06 is: 2,155.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,825.50 : 4,235.72 = 1,438.06 : x
  2. Step 2: Convert to fraction form
    2,825.50/4,235.72 = 1,438.06/x
  3. Step 3: Cross multiply
    2,825.50x = 4,235.72 × 1,438.06
  4. Step 4: Simplify right side
    2,825.50x = 6,091,219.50
  5. Step 5: Solve for x
    x = 6,091,219.50/2,825.50
  6. Step 6: Final answer
    x = 2,155.80

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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.