Home / 3,638.46-5,457.40-1,298.36

Finding the Fourth Proportional to 3,638.46, 5,457.40 and 1,298.36

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Solution

The fourth proportional to 3,638.46, 5,457.40 and 1,298.36 is: 1,947.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.46 : 5,457.40 = 1,298.36 : x
  2. Step 2: Convert to fraction form
    3,638.46/5,457.40 = 1,298.36/x
  3. Step 3: Cross multiply
    3,638.46x = 5,457.40 × 1,298.36
  4. Step 4: Simplify right side
    3,638.46x = 7,085,669.86
  5. Step 5: Solve for x
    x = 7,085,669.86/3,638.46
  6. Step 6: Final answer
    x = 1,947.44

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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.