Home / 1,962.72-2,709.36-1,342.08

Finding the Fourth Proportional to 1,962.72, 2,709.36 and 1,342.08

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Solution

The fourth proportional to 1,962.72, 2,709.36 and 1,342.08 is: 1,852.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,962.72 : 2,709.36 = 1,342.08 : x
  2. Step 2: Convert to fraction form
    1,962.72/2,709.36 = 1,342.08/x
  3. Step 3: Cross multiply
    1,962.72x = 2,709.36 × 1,342.08
  4. Step 4: Simplify right side
    1,962.72x = 3,636,177.87
  5. Step 5: Solve for x
    x = 3,636,177.87/1,962.72
  6. Step 6: Final answer
    x = 1,852.62

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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.