Home / 1,962.90-2,945.70-1,415.55

Finding the Fourth Proportional to 1,962.90, 2,945.70 and 1,415.55

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Solution

The fourth proportional to 1,962.90, 2,945.70 and 1,415.55 is: 2,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.90 : 2,945.70 = 1,415.55 : x
  2. Step 2: Convert to fraction form
    1,962.90/2,945.70 = 1,415.55/x
  3. Step 3: Cross multiply
    1,962.90x = 2,945.70 × 1,415.55
  4. Step 4: Simplify right side
    1,962.90x = 4,169,785.64
  5. Step 5: Solve for x
    x = 4,169,785.64/1,962.90
  6. Step 6: Final answer
    x = 2,124.30

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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.