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Finding the Fourth Proportional to 1,479, 2,041.14 and 858.12

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Solution

The fourth proportional to 1,479, 2,041.14 and 858.12 is: 1,184.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479 : 2,041.14 = 858.12 : x
  2. Step 2: Convert to fraction form
    1,479/2,041.14 = 858.12/x
  3. Step 3: Cross multiply
    1,479x = 2,041.14 × 858.12
  4. Step 4: Simplify right side
    1,479x = 1,751,543.06
  5. Step 5: Solve for x
    x = 1,751,543.06/1,479
  6. Step 6: Final answer
    x = 1,184.28

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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.