Home / 1,962.18-2,707.84-1,078.01

Finding the Fourth Proportional to 1,962.18, 2,707.84 and 1,078.01

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Solution

The fourth proportional to 1,962.18, 2,707.84 and 1,078.01 is: 1,487.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.18 : 2,707.84 = 1,078.01 : x
  2. Step 2: Convert to fraction form
    1,962.18/2,707.84 = 1,078.01/x
  3. Step 3: Cross multiply
    1,962.18x = 2,707.84 × 1,078.01
  4. Step 4: Simplify right side
    1,962.18x = 2,919,078.60
  5. Step 5: Solve for x
    x = 2,919,078.60/1,962.18
  6. Step 6: Final answer
    x = 1,487.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.