Home / 1,538.20-2,307.30-882.10

Finding the Fourth Proportional to 1,538.20, 2,307.30 and 882.10

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Solution

The fourth proportional to 1,538.20, 2,307.30 and 882.10 is: 1,323.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.20 : 2,307.30 = 882.10 : x
  2. Step 2: Convert to fraction form
    1,538.20/2,307.30 = 882.10/x
  3. Step 3: Cross multiply
    1,538.20x = 2,307.30 × 882.10
  4. Step 4: Simplify right side
    1,538.20x = 2,035,269.33
  5. Step 5: Solve for x
    x = 2,035,269.33/1,538.20
  6. Step 6: Final answer
    x = 1,323.15

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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.