Home / 1,918.32-2,876.76-619.44

Finding the Fourth Proportional to 1,918.32, 2,876.76 and 619.44

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Solution

The fourth proportional to 1,918.32, 2,876.76 and 619.44 is: 928.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.32 : 2,876.76 = 619.44 : x
  2. Step 2: Convert to fraction form
    1,918.32/2,876.76 = 619.44/x
  3. Step 3: Cross multiply
    1,918.32x = 2,876.76 × 619.44
  4. Step 4: Simplify right side
    1,918.32x = 1,781,980.21
  5. Step 5: Solve for x
    x = 1,781,980.21/1,918.32
  6. Step 6: Final answer
    x = 928.93

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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.