Home / 1,538.14-2,307.20-383.89

Finding the Fourth Proportional to 1,538.14, 2,307.20 and 383.89

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Solution

The fourth proportional to 1,538.14, 2,307.20 and 383.89 is: 575.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.14 : 2,307.20 = 383.89 : x
  2. Step 2: Convert to fraction form
    1,538.14/2,307.20 = 383.89/x
  3. Step 3: Cross multiply
    1,538.14x = 2,307.20 × 383.89
  4. Step 4: Simplify right side
    1,538.14x = 885,703.32
  5. Step 5: Solve for x
    x = 885,703.32/1,538.14
  6. Step 6: Final answer
    x = 575.83

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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.