Home / 1,365.24-2,047.85-391.35

Finding the Fourth Proportional to 1,365.24, 2,047.85 and 391.35

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Solution

The fourth proportional to 1,365.24, 2,047.85 and 391.35 is: 587.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365.24 : 2,047.85 = 391.35 : x
  2. Step 2: Convert to fraction form
    1,365.24/2,047.85 = 391.35/x
  3. Step 3: Cross multiply
    1,365.24x = 2,047.85 × 391.35
  4. Step 4: Simplify right side
    1,365.24x = 801,424.14
  5. Step 5: Solve for x
    x = 801,424.14/1,365.24
  6. Step 6: Final answer
    x = 587.02

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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.