Home / 1,842.30-2,759.40-1,477.80

Finding the Fourth Proportional to 1,842.30, 2,759.40 and 1,477.80

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Solution

The fourth proportional to 1,842.30, 2,759.40 and 1,477.80 is: 2,213.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,842.30 : 2,759.40 = 1,477.80 : x
  2. Step 2: Convert to fraction form
    1,842.30/2,759.40 = 1,477.80/x
  3. Step 3: Cross multiply
    1,842.30x = 2,759.40 × 1,477.80
  4. Step 4: Simplify right side
    1,842.30x = 4,077,841.32
  5. Step 5: Solve for x
    x = 4,077,841.32/1,842.30
  6. Step 6: Final answer
    x = 2,213.45

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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.