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Finding the Fourth Proportional to 1,770.19, 2,443.01 and 984.39

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Solution

The fourth proportional to 1,770.19, 2,443.01 and 984.39 is: 1,358.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.19 : 2,443.01 = 984.39 : x
  2. Step 2: Convert to fraction form
    1,770.19/2,443.01 = 984.39/x
  3. Step 3: Cross multiply
    1,770.19x = 2,443.01 × 984.39
  4. Step 4: Simplify right side
    1,770.19x = 2,404,866.07
  5. Step 5: Solve for x
    x = 2,404,866.07/1,770.19
  6. Step 6: Final answer
    x = 1,358.54

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Double scale
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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.