Home / 2,802.90-4,208.40-1,984.80

Finding the Fourth Proportional to 2,802.90, 4,208.40 and 1,984.80

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Solution

The fourth proportional to 2,802.90, 4,208.40 and 1,984.80 is: 2,980.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.90 : 4,208.40 = 1,984.80 : x
  2. Step 2: Convert to fraction form
    2,802.90/4,208.40 = 1,984.80/x
  3. Step 3: Cross multiply
    2,802.90x = 4,208.40 × 1,984.80
  4. Step 4: Simplify right side
    2,802.90x = 8,352,832.32
  5. Step 5: Solve for x
    x = 8,352,832.32/2,802.90
  6. Step 6: Final answer
    x = 2,980.07

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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.