Home / 1,258.20-1,736.64-1,126.98

Finding the Fourth Proportional to 1,258.20, 1,736.64 and 1,126.98

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Solution

The fourth proportional to 1,258.20, 1,736.64 and 1,126.98 is: 1,555.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.20 : 1,736.64 = 1,126.98 : x
  2. Step 2: Convert to fraction form
    1,258.20/1,736.64 = 1,126.98/x
  3. Step 3: Cross multiply
    1,258.20x = 1,736.64 × 1,126.98
  4. Step 4: Simplify right side
    1,258.20x = 1,957,158.55
  5. Step 5: Solve for x
    x = 1,957,158.55/1,258.20
  6. Step 6: Final answer
    x = 1,555.52

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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.