Home / 1,917.28-2,642.16-1,364.32

Finding the Fourth Proportional to 1,917.28, 2,642.16 and 1,364.32

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Solution

The fourth proportional to 1,917.28, 2,642.16 and 1,364.32 is: 1,880.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.28 : 2,642.16 = 1,364.32 : x
  2. Step 2: Convert to fraction form
    1,917.28/2,642.16 = 1,364.32/x
  3. Step 3: Cross multiply
    1,917.28x = 2,642.16 × 1,364.32
  4. Step 4: Simplify right side
    1,917.28x = 3,604,751.73
  5. Step 5: Solve for x
    x = 3,604,751.73/1,917.28
  6. Step 6: Final answer
    x = 1,880.14

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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.