Home / 1,990.02-2,984.85-529.12

Finding the Fourth Proportional to 1,990.02, 2,984.85 and 529.12

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Solution

The fourth proportional to 1,990.02, 2,984.85 and 529.12 is: 793.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.02 : 2,984.85 = 529.12 : x
  2. Step 2: Convert to fraction form
    1,990.02/2,984.85 = 529.12/x
  3. Step 3: Cross multiply
    1,990.02x = 2,984.85 × 529.12
  4. Step 4: Simplify right side
    1,990.02x = 1,579,336.37
  5. Step 5: Solve for x
    x = 1,579,336.37/1,990.02
  6. Step 6: Final answer
    x = 793.63

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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.