Home / 2,847.40-4,271.66-899.72

Finding the Fourth Proportional to 2,847.40, 4,271.66 and 899.72

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Solution

The fourth proportional to 2,847.40, 4,271.66 and 899.72 is: 1,349.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.40 : 4,271.66 = 899.72 : x
  2. Step 2: Convert to fraction form
    2,847.40/4,271.66 = 899.72/x
  3. Step 3: Cross multiply
    2,847.40x = 4,271.66 × 899.72
  4. Step 4: Simplify right side
    2,847.40x = 3,843,297.94
  5. Step 5: Solve for x
    x = 3,843,297.94/2,847.40
  6. Step 6: Final answer
    x = 1,349.76

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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.