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Finding the Fourth Proportional to 1,394.68, 2,090.96 and 846.72

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Solution

The fourth proportional to 1,394.68, 2,090.96 and 846.72 is: 1,269.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.68 : 2,090.96 = 846.72 : x
  2. Step 2: Convert to fraction form
    1,394.68/2,090.96 = 846.72/x
  3. Step 3: Cross multiply
    1,394.68x = 2,090.96 × 846.72
  4. Step 4: Simplify right side
    1,394.68x = 1,770,457.65
  5. Step 5: Solve for x
    x = 1,770,457.65/1,394.68
  6. Step 6: Final answer
    x = 1,269.44

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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.