Home / 1,670.22-2,302.27-1,315.60

Finding the Fourth Proportional to 1,670.22, 2,302.27 and 1,315.60

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Solution

The fourth proportional to 1,670.22, 2,302.27 and 1,315.60 is: 1,813.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.22 : 2,302.27 = 1,315.60 : x
  2. Step 2: Convert to fraction form
    1,670.22/2,302.27 = 1,315.60/x
  3. Step 3: Cross multiply
    1,670.22x = 2,302.27 × 1,315.60
  4. Step 4: Simplify right side
    1,670.22x = 3,028,857.37
  5. Step 5: Solve for x
    x = 3,028,857.37/1,670.22
  6. Step 6: Final answer
    x = 1,813.45

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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.