Home / 1,620.48-2,239.29-1,325.64

Finding the Fourth Proportional to 1,620.48, 2,239.29 and 1,325.64

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Solution

The fourth proportional to 1,620.48, 2,239.29 and 1,325.64 is: 1,831.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.48 : 2,239.29 = 1,325.64 : x
  2. Step 2: Convert to fraction form
    1,620.48/2,239.29 = 1,325.64/x
  3. Step 3: Cross multiply
    1,620.48x = 2,239.29 × 1,325.64
  4. Step 4: Simplify right side
    1,620.48x = 2,968,492.40
  5. Step 5: Solve for x
    x = 2,968,492.40/1,620.48
  6. Step 6: Final answer
    x = 1,831.86

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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.