Home / 1,916.26-2,642.78-1,253.32

Finding the Fourth Proportional to 1,916.26, 2,642.78 and 1,253.32

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Solution

The fourth proportional to 1,916.26, 2,642.78 and 1,253.32 is: 1,728.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.26 : 2,642.78 = 1,253.32 : x
  2. Step 2: Convert to fraction form
    1,916.26/2,642.78 = 1,253.32/x
  3. Step 3: Cross multiply
    1,916.26x = 2,642.78 × 1,253.32
  4. Step 4: Simplify right side
    1,916.26x = 3,312,253.37
  5. Step 5: Solve for x
    x = 3,312,253.37/1,916.26
  6. Step 6: Final answer
    x = 1,728.50

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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.