Home / 1,239.04-1,857.80-469.60

Finding the Fourth Proportional to 1,239.04, 1,857.80 and 469.60

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Solution

The fourth proportional to 1,239.04, 1,857.80 and 469.60 is: 704.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239.04 : 1,857.80 = 469.60 : x
  2. Step 2: Convert to fraction form
    1,239.04/1,857.80 = 469.60/x
  3. Step 3: Cross multiply
    1,239.04x = 1,857.80 × 469.60
  4. Step 4: Simplify right side
    1,239.04x = 872,422.88
  5. Step 5: Solve for x
    x = 872,422.88/1,239.04
  6. Step 6: Final answer
    x = 704.11

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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.