Home / 1,478.31-2,218.83-1,173.51

Finding the Fourth Proportional to 1,478.31, 2,218.83 and 1,173.51

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Solution

The fourth proportional to 1,478.31, 2,218.83 and 1,173.51 is: 1,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.31 : 2,218.83 = 1,173.51 : x
  2. Step 2: Convert to fraction form
    1,478.31/2,218.83 = 1,173.51/x
  3. Step 3: Cross multiply
    1,478.31x = 2,218.83 × 1,173.51
  4. Step 4: Simplify right side
    1,478.31x = 2,603,819.19
  5. Step 5: Solve for x
    x = 2,603,819.19/1,478.31
  6. Step 6: Final answer
    x = 1,761.35

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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.