Home / 2,810.94-3,876.90-1,816.32

Finding the Fourth Proportional to 2,810.94, 3,876.90 and 1,816.32

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Solution

The fourth proportional to 2,810.94, 3,876.90 and 1,816.32 is: 2,505.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.94 : 3,876.90 = 1,816.32 : x
  2. Step 2: Convert to fraction form
    2,810.94/3,876.90 = 1,816.32/x
  3. Step 3: Cross multiply
    2,810.94x = 3,876.90 × 1,816.32
  4. Step 4: Simplify right side
    2,810.94x = 7,041,691.01
  5. Step 5: Solve for x
    x = 7,041,691.01/2,810.94
  6. Step 6: Final answer
    x = 2,505.10

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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.