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Finding the Fourth Proportional to 2,807.52, 3,873.60 and 1,812.84

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Solution

The fourth proportional to 2,807.52, 3,873.60 and 1,812.84 is: 2,501.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.52 : 3,873.60 = 1,812.84 : x
  2. Step 2: Convert to fraction form
    2,807.52/3,873.60 = 1,812.84/x
  3. Step 3: Cross multiply
    2,807.52x = 3,873.60 × 1,812.84
  4. Step 4: Simplify right side
    2,807.52x = 7,022,217.02
  5. Step 5: Solve for x
    x = 7,022,217.02/2,807.52
  6. Step 6: Final answer
    x = 2,501.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.