Home / 1,399.28-1,931.46-1,302.08

Finding the Fourth Proportional to 1,399.28, 1,931.46 and 1,302.08

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Solution

The fourth proportional to 1,399.28, 1,931.46 and 1,302.08 is: 1,797.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399.28 : 1,931.46 = 1,302.08 : x
  2. Step 2: Convert to fraction form
    1,399.28/1,931.46 = 1,302.08/x
  3. Step 3: Cross multiply
    1,399.28x = 1,931.46 × 1,302.08
  4. Step 4: Simplify right side
    1,399.28x = 2,514,915.44
  5. Step 5: Solve for x
    x = 2,514,915.44/1,399.28
  6. Step 6: Final answer
    x = 1,797.29

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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.