Home / 1,902.79-2,626.46-1,116.73

Finding the Fourth Proportional to 1,902.79, 2,626.46 and 1,116.73

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Solution

The fourth proportional to 1,902.79, 2,626.46 and 1,116.73 is: 1,541.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,902.79 : 2,626.46 = 1,116.73 : x
  2. Step 2: Convert to fraction form
    1,902.79/2,626.46 = 1,116.73/x
  3. Step 3: Cross multiply
    1,902.79x = 2,626.46 × 1,116.73
  4. Step 4: Simplify right side
    1,902.79x = 2,933,046.68
  5. Step 5: Solve for x
    x = 2,933,046.68/1,902.79
  6. Step 6: Final answer
    x = 1,541.45

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Half scale
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Double scale
Find fourth proportional to 1,903.79, 2,627.84 and 1,117.73
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.