Home / 1,347.02-2,021.09-654.20

Finding the Fourth Proportional to 1,347.02, 2,021.09 and 654.20

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Solution

The fourth proportional to 1,347.02, 2,021.09 and 654.20 is: 981.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.02 : 2,021.09 = 654.20 : x
  2. Step 2: Convert to fraction form
    1,347.02/2,021.09 = 654.20/x
  3. Step 3: Cross multiply
    1,347.02x = 2,021.09 × 654.20
  4. Step 4: Simplify right side
    1,347.02x = 1,322,183.70
  5. Step 5: Solve for x
    x = 1,322,183.70/1,347.02
  6. Step 6: Final answer
    x = 981.57

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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.