Home / 1,187.44-1,770.34-1,157.11

Finding the Fourth Proportional to 1,187.44, 1,770.34 and 1,157.11

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Solution

The fourth proportional to 1,187.44, 1,770.34 and 1,157.11 is: 1,725.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187.44 : 1,770.34 = 1,157.11 : x
  2. Step 2: Convert to fraction form
    1,187.44/1,770.34 = 1,157.11/x
  3. Step 3: Cross multiply
    1,187.44x = 1,770.34 × 1,157.11
  4. Step 4: Simplify right side
    1,187.44x = 2,048,487.86
  5. Step 5: Solve for x
    x = 2,048,487.86/1,187.44
  6. Step 6: Final answer
    x = 1,725.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.