Home / 1,878.02-2,816.32-628.36

Finding the Fourth Proportional to 1,878.02, 2,816.32 and 628.36

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Solution

The fourth proportional to 1,878.02, 2,816.32 and 628.36 is: 942.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.02 : 2,816.32 = 628.36 : x
  2. Step 2: Convert to fraction form
    1,878.02/2,816.32 = 628.36/x
  3. Step 3: Cross multiply
    1,878.02x = 2,816.32 × 628.36
  4. Step 4: Simplify right side
    1,878.02x = 1,769,662.84
  5. Step 5: Solve for x
    x = 1,769,662.84/1,878.02
  6. Step 6: Final answer
    x = 942.30

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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.