Home / 1,770.57-2,655.32-1,638.81

Finding the Fourth Proportional to 1,770.57, 2,655.32 and 1,638.81

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Solution

The fourth proportional to 1,770.57, 2,655.32 and 1,638.81 is: 2,457.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.57 : 2,655.32 = 1,638.81 : x
  2. Step 2: Convert to fraction form
    1,770.57/2,655.32 = 1,638.81/x
  3. Step 3: Cross multiply
    1,770.57x = 2,655.32 × 1,638.81
  4. Step 4: Simplify right side
    1,770.57x = 4,351,556.78
  5. Step 5: Solve for x
    x = 4,351,556.78/1,770.57
  6. Step 6: Final answer
    x = 2,457.72

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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.