Home / 1,688.06-2,327.97-1,128.26

Finding the Fourth Proportional to 1,688.06, 2,327.97 and 1,128.26

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Solution

The fourth proportional to 1,688.06, 2,327.97 and 1,128.26 is: 1,555.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.06 : 2,327.97 = 1,128.26 : x
  2. Step 2: Convert to fraction form
    1,688.06/2,327.97 = 1,128.26/x
  3. Step 3: Cross multiply
    1,688.06x = 2,327.97 × 1,128.26
  4. Step 4: Simplify right side
    1,688.06x = 2,626,555.43
  5. Step 5: Solve for x
    x = 2,626,555.43/1,688.06
  6. Step 6: Final answer
    x = 1,555.96

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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.