Home / 1,170.57-1,622.78-1,108.15

Finding the Fourth Proportional to 1,170.57, 1,622.78 and 1,108.15

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Solution

The fourth proportional to 1,170.57, 1,622.78 and 1,108.15 is: 1,536.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170.57 : 1,622.78 = 1,108.15 : x
  2. Step 2: Convert to fraction form
    1,170.57/1,622.78 = 1,108.15/x
  3. Step 3: Cross multiply
    1,170.57x = 1,622.78 × 1,108.15
  4. Step 4: Simplify right side
    1,170.57x = 1,798,282.37
  5. Step 5: Solve for x
    x = 1,798,282.37/1,170.57
  6. Step 6: Final answer
    x = 1,536.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.