Home / 1,256.20-1,733.56-696.70

Finding the Fourth Proportional to 1,256.20, 1,733.56 and 696.70

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Solution

The fourth proportional to 1,256.20, 1,733.56 and 696.70 is: 961.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.20 : 1,733.56 = 696.70 : x
  2. Step 2: Convert to fraction form
    1,256.20/1,733.56 = 696.70/x
  3. Step 3: Cross multiply
    1,256.20x = 1,733.56 × 696.70
  4. Step 4: Simplify right side
    1,256.20x = 1,207,771.25
  5. Step 5: Solve for x
    x = 1,207,771.25/1,256.20
  6. Step 6: Final answer
    x = 961.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.