Home / 1,357.18-2,035.89-383.28

Finding the Fourth Proportional to 1,357.18, 2,035.89 and 383.28

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Solution

The fourth proportional to 1,357.18, 2,035.89 and 383.28 is: 574.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.18 : 2,035.89 = 383.28 : x
  2. Step 2: Convert to fraction form
    1,357.18/2,035.89 = 383.28/x
  3. Step 3: Cross multiply
    1,357.18x = 2,035.89 × 383.28
  4. Step 4: Simplify right side
    1,357.18x = 780,315.92
  5. Step 5: Solve for x
    x = 780,315.92/1,357.18
  6. Step 6: Final answer
    x = 574.95

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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.