Home / 1,638.56-2,457.93-1,555.52

Finding the Fourth Proportional to 1,638.56, 2,457.93 and 1,555.52

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Solution

The fourth proportional to 1,638.56, 2,457.93 and 1,555.52 is: 2,333.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.56 : 2,457.93 = 1,555.52 : x
  2. Step 2: Convert to fraction form
    1,638.56/2,457.93 = 1,555.52/x
  3. Step 3: Cross multiply
    1,638.56x = 2,457.93 × 1,555.52
  4. Step 4: Simplify right side
    1,638.56x = 3,823,357.89
  5. Step 5: Solve for x
    x = 3,823,357.89/1,638.56
  6. Step 6: Final answer
    x = 2,333.36

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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.