Home / 1,693.45-2,336.96-985.71

Finding the Fourth Proportional to 1,693.45, 2,336.96 and 985.71

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Solution

The fourth proportional to 1,693.45, 2,336.96 and 985.71 is: 1,360.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,693.45 : 2,336.96 = 985.71 : x
  2. Step 2: Convert to fraction form
    1,693.45/2,336.96 = 985.71/x
  3. Step 3: Cross multiply
    1,693.45x = 2,336.96 × 985.71
  4. Step 4: Simplify right side
    1,693.45x = 2,303,567.31
  5. Step 5: Solve for x
    x = 2,303,567.31/1,693.45
  6. Step 6: Final answer
    x = 1,360.28

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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.