Home / 2,079-2,869.59-1,239.42

Finding the Fourth Proportional to 2,079, 2,869.59 and 1,239.42

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Solution

The fourth proportional to 2,079, 2,869.59 and 1,239.42 is: 1,710.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079 : 2,869.59 = 1,239.42 : x
  2. Step 2: Convert to fraction form
    2,079/2,869.59 = 1,239.42/x
  3. Step 3: Cross multiply
    2,079x = 2,869.59 × 1,239.42
  4. Step 4: Simplify right side
    2,079x = 3,556,627.24
  5. Step 5: Solve for x
    x = 3,556,627.24/2,079
  6. Step 6: Final answer
    x = 1,710.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.