Home / 1,695.12-2,339.07-986.87

Finding the Fourth Proportional to 1,695.12, 2,339.07 and 986.87

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Solution

The fourth proportional to 1,695.12, 2,339.07 and 986.87 is: 1,361.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.12 : 2,339.07 = 986.87 : x
  2. Step 2: Convert to fraction form
    1,695.12/2,339.07 = 986.87/x
  3. Step 3: Cross multiply
    1,695.12x = 2,339.07 × 986.87
  4. Step 4: Simplify right side
    1,695.12x = 2,308,346.32
  5. Step 5: Solve for x
    x = 2,308,346.32/1,695.12
  6. Step 6: Final answer
    x = 1,361.76

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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.