Home / 1,384.02-2,076.23-518.25

Finding the Fourth Proportional to 1,384.02, 2,076.23 and 518.25

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Solution

The fourth proportional to 1,384.02, 2,076.23 and 518.25 is: 777.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384.02 : 2,076.23 = 518.25 : x
  2. Step 2: Convert to fraction form
    1,384.02/2,076.23 = 518.25/x
  3. Step 3: Cross multiply
    1,384.02x = 2,076.23 × 518.25
  4. Step 4: Simplify right side
    1,384.02x = 1,076,006.20
  5. Step 5: Solve for x
    x = 1,076,006.20/1,384.02
  6. Step 6: Final answer
    x = 777.45

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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.