Home / 1,573.32-2,170.90-1,021

Finding the Fourth Proportional to 1,573.32, 2,170.90 and 1,021

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Solution

The fourth proportional to 1,573.32, 2,170.90 and 1,021 is: 1,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.32 : 2,170.90 = 1,021 : x
  2. Step 2: Convert to fraction form
    1,573.32/2,170.90 = 1,021/x
  3. Step 3: Cross multiply
    1,573.32x = 2,170.90 × 1,021
  4. Step 4: Simplify right side
    1,573.32x = 2,216,488.90
  5. Step 5: Solve for x
    x = 2,216,488.90/1,573.32
  6. Step 6: Final answer
    x = 1,408.80

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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.