Home / 1,919.30-2,879.28-602.80

Finding the Fourth Proportional to 1,919.30, 2,879.28 and 602.80

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Solution

The fourth proportional to 1,919.30, 2,879.28 and 602.80 is: 904.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.30 : 2,879.28 = 602.80 : x
  2. Step 2: Convert to fraction form
    1,919.30/2,879.28 = 602.80/x
  3. Step 3: Cross multiply
    1,919.30x = 2,879.28 × 602.80
  4. Step 4: Simplify right side
    1,919.30x = 1,735,637.18
  5. Step 5: Solve for x
    x = 1,735,637.18/1,919.30
  6. Step 6: Final answer
    x = 904.31

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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.