Home / 1,538.20-2,307.28-383.94

Finding the Fourth Proportional to 1,538.20, 2,307.28 and 383.94

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Solution

The fourth proportional to 1,538.20, 2,307.28 and 383.94 is: 575.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.20 : 2,307.28 = 383.94 : x
  2. Step 2: Convert to fraction form
    1,538.20/2,307.28 = 383.94/x
  3. Step 3: Cross multiply
    1,538.20x = 2,307.28 × 383.94
  4. Step 4: Simplify right side
    1,538.20x = 885,857.08
  5. Step 5: Solve for x
    x = 885,857.08/1,538.20
  6. Step 6: Final answer
    x = 575.91

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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.