Home / 1,989.02-2,982.90-1,641.46

Finding the Fourth Proportional to 1,989.02, 2,982.90 and 1,641.46

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Solution

The fourth proportional to 1,989.02, 2,982.90 and 1,641.46 is: 2,461.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.02 : 2,982.90 = 1,641.46 : x
  2. Step 2: Convert to fraction form
    1,989.02/2,982.90 = 1,641.46/x
  3. Step 3: Cross multiply
    1,989.02x = 2,982.90 × 1,641.46
  4. Step 4: Simplify right side
    1,989.02x = 4,896,311.03
  5. Step 5: Solve for x
    x = 4,896,311.03/1,989.02
  6. Step 6: Final answer
    x = 2,461.67

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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.