Home / 1,945.26-2,917.56-646.74

Finding the Fourth Proportional to 1,945.26, 2,917.56 and 646.74

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Solution

The fourth proportional to 1,945.26, 2,917.56 and 646.74 is: 970.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.26 : 2,917.56 = 646.74 : x
  2. Step 2: Convert to fraction form
    1,945.26/2,917.56 = 646.74/x
  3. Step 3: Cross multiply
    1,945.26x = 2,917.56 × 646.74
  4. Step 4: Simplify right side
    1,945.26x = 1,886,902.75
  5. Step 5: Solve for x
    x = 1,886,902.75/1,945.26
  6. Step 6: Final answer
    x = 970.00

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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.