Home / 1,573.90-2,172.15-984.63

Finding the Fourth Proportional to 1,573.90, 2,172.15 and 984.63

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Solution

The fourth proportional to 1,573.90, 2,172.15 and 984.63 is: 1,358.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.90 : 2,172.15 = 984.63 : x
  2. Step 2: Convert to fraction form
    1,573.90/2,172.15 = 984.63/x
  3. Step 3: Cross multiply
    1,573.90x = 2,172.15 × 984.63
  4. Step 4: Simplify right side
    1,573.90x = 2,138,764.05
  5. Step 5: Solve for x
    x = 2,138,764.05/1,573.90
  6. Step 6: Final answer
    x = 1,358.89

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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.