Home / 2,136.64-2,947.36-1,308.16

Finding the Fourth Proportional to 2,136.64, 2,947.36 and 1,308.16

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Solution

The fourth proportional to 2,136.64, 2,947.36 and 1,308.16 is: 1,804.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.64 : 2,947.36 = 1,308.16 : x
  2. Step 2: Convert to fraction form
    2,136.64/2,947.36 = 1,308.16/x
  3. Step 3: Cross multiply
    2,136.64x = 2,947.36 × 1,308.16
  4. Step 4: Simplify right side
    2,136.64x = 3,855,618.46
  5. Step 5: Solve for x
    x = 3,855,618.46/2,136.64
  6. Step 6: Final answer
    x = 1,804.52

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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.