Home / 2,817.10-4,228.24-1,431.40

Finding the Fourth Proportional to 2,817.10, 4,228.24 and 1,431.40

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Solution

The fourth proportional to 2,817.10, 4,228.24 and 1,431.40 is: 2,148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.10 : 4,228.24 = 1,431.40 : x
  2. Step 2: Convert to fraction form
    2,817.10/4,228.24 = 1,431.40/x
  3. Step 3: Cross multiply
    2,817.10x = 4,228.24 × 1,431.40
  4. Step 4: Simplify right side
    2,817.10x = 6,052,302.74
  5. Step 5: Solve for x
    x = 6,052,302.74/2,817.10
  6. Step 6: Final answer
    x = 2,148.42

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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.