Home / 1,360.27-2,040.47-386.45

Finding the Fourth Proportional to 1,360.27, 2,040.47 and 386.45

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Solution

The fourth proportional to 1,360.27, 2,040.47 and 386.45 is: 579.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.27 : 2,040.47 = 386.45 : x
  2. Step 2: Convert to fraction form
    1,360.27/2,040.47 = 386.45/x
  3. Step 3: Cross multiply
    1,360.27x = 2,040.47 × 386.45
  4. Step 4: Simplify right side
    1,360.27x = 788,530.40
  5. Step 5: Solve for x
    x = 788,530.40/1,360.27
  6. Step 6: Final answer
    x = 579.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.