Home / 1,186.20-1,770.51-1,113.24

Finding the Fourth Proportional to 1,186.20, 1,770.51 and 1,113.24

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Solution

The fourth proportional to 1,186.20, 1,770.51 and 1,113.24 is: 1,661.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.20 : 1,770.51 = 1,113.24 : x
  2. Step 2: Convert to fraction form
    1,186.20/1,770.51 = 1,113.24/x
  3. Step 3: Cross multiply
    1,186.20x = 1,770.51 × 1,113.24
  4. Step 4: Simplify right side
    1,186.20x = 1,971,002.55
  5. Step 5: Solve for x
    x = 1,971,002.55/1,186.20
  6. Step 6: Final answer
    x = 1,661.61

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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.