Home / 1,917.48-2,876.54-618.92

Finding the Fourth Proportional to 1,917.48, 2,876.54 and 618.92

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Solution

The fourth proportional to 1,917.48, 2,876.54 and 618.92 is: 928.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.48 : 2,876.54 = 618.92 : x
  2. Step 2: Convert to fraction form
    1,917.48/2,876.54 = 618.92/x
  3. Step 3: Cross multiply
    1,917.48x = 2,876.54 × 618.92
  4. Step 4: Simplify right side
    1,917.48x = 1,780,348.14
  5. Step 5: Solve for x
    x = 1,780,348.14/1,917.48
  6. Step 6: Final answer
    x = 928.48

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1.5x scale

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.