Home / 2,847.45-4,270.81-899.85

Finding the Fourth Proportional to 2,847.45, 4,270.81 and 899.85

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Solution

The fourth proportional to 2,847.45, 4,270.81 and 899.85 is: 1,349.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.45 : 4,270.81 = 899.85 : x
  2. Step 2: Convert to fraction form
    2,847.45/4,270.81 = 899.85/x
  3. Step 3: Cross multiply
    2,847.45x = 4,270.81 × 899.85
  4. Step 4: Simplify right side
    2,847.45x = 3,843,088.38
  5. Step 5: Solve for x
    x = 3,843,088.38/2,847.45
  6. Step 6: Final answer
    x = 1,349.66

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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.