Home / 1,342.27-2,012.19-649.60

Finding the Fourth Proportional to 1,342.27, 2,012.19 and 649.60

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Solution

The fourth proportional to 1,342.27, 2,012.19 and 649.60 is: 973.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.27 : 2,012.19 = 649.60 : x
  2. Step 2: Convert to fraction form
    1,342.27/2,012.19 = 649.60/x
  3. Step 3: Cross multiply
    1,342.27x = 2,012.19 × 649.60
  4. Step 4: Simplify right side
    1,342.27x = 1,307,114.81
  5. Step 5: Solve for x
    x = 1,307,114.81/1,342.27
  6. Step 6: Final answer
    x = 973.81

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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.