Home / 1,440.32-2,160.71-1,028.74

Finding the Fourth Proportional to 1,440.32, 2,160.71 and 1,028.74

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Solution

The fourth proportional to 1,440.32, 2,160.71 and 1,028.74 is: 1,543.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.32 : 2,160.71 = 1,028.74 : x
  2. Step 2: Convert to fraction form
    1,440.32/2,160.71 = 1,028.74/x
  3. Step 3: Cross multiply
    1,440.32x = 2,160.71 × 1,028.74
  4. Step 4: Simplify right side
    1,440.32x = 2,222,808.81
  5. Step 5: Solve for x
    x = 2,222,808.81/1,440.32
  6. Step 6: Final answer
    x = 1,543.27

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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.