Home / 1,712.06-2,564.84-979.40

Finding the Fourth Proportional to 1,712.06, 2,564.84 and 979.40

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Solution

The fourth proportional to 1,712.06, 2,564.84 and 979.40 is: 1,467.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,712.06 : 2,564.84 = 979.40 : x
  2. Step 2: Convert to fraction form
    1,712.06/2,564.84 = 979.40/x
  3. Step 3: Cross multiply
    1,712.06x = 2,564.84 × 979.40
  4. Step 4: Simplify right side
    1,712.06x = 2,512,004.30
  5. Step 5: Solve for x
    x = 2,512,004.30/1,712.06
  6. Step 6: Final answer
    x = 1,467.24

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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.