Home / 1,369.23-1,887.27-1,318.20

Finding the Fourth Proportional to 1,369.23, 1,887.27 and 1,318.20

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Solution

The fourth proportional to 1,369.23, 1,887.27 and 1,318.20 is: 1,816.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369.23 : 1,887.27 = 1,318.20 : x
  2. Step 2: Convert to fraction form
    1,369.23/1,887.27 = 1,318.20/x
  3. Step 3: Cross multiply
    1,369.23x = 1,887.27 × 1,318.20
  4. Step 4: Simplify right side
    1,369.23x = 2,487,799.31
  5. Step 5: Solve for x
    x = 2,487,799.31/1,369.23
  6. Step 6: Final answer
    x = 1,816.93

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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.