Home / 1,990.02-2,984.12-1,065.42

Finding the Fourth Proportional to 1,990.02, 2,984.12 and 1,065.42

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Solution

The fourth proportional to 1,990.02, 2,984.12 and 1,065.42 is: 1,597.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.02 : 2,984.12 = 1,065.42 : x
  2. Step 2: Convert to fraction form
    1,990.02/2,984.12 = 1,065.42/x
  3. Step 3: Cross multiply
    1,990.02x = 2,984.12 × 1,065.42
  4. Step 4: Simplify right side
    1,990.02x = 3,179,341.13
  5. Step 5: Solve for x
    x = 3,179,341.13/1,990.02
  6. Step 6: Final answer
    x = 1,597.64

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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.