Home / 1,157.45-1,742.37-1,038.38

Finding the Fourth Proportional to 1,157.45, 1,742.37 and 1,038.38

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Solution

The fourth proportional to 1,157.45, 1,742.37 and 1,038.38 is: 1,563.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157.45 : 1,742.37 = 1,038.38 : x
  2. Step 2: Convert to fraction form
    1,157.45/1,742.37 = 1,038.38/x
  3. Step 3: Cross multiply
    1,157.45x = 1,742.37 × 1,038.38
  4. Step 4: Simplify right side
    1,157.45x = 1,809,229.55
  5. Step 5: Solve for x
    x = 1,809,229.55/1,157.45
  6. Step 6: Final answer
    x = 1,563.12

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.