Home / 5,414.40-8,118.08-1,715.36

Finding the Fourth Proportional to 5,414.40, 8,118.08 and 1,715.36

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Solution

The fourth proportional to 5,414.40, 8,118.08 and 1,715.36 is: 2,571.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.40 : 8,118.08 = 1,715.36 : x
  2. Step 2: Convert to fraction form
    5,414.40/8,118.08 = 1,715.36/x
  3. Step 3: Cross multiply
    5,414.40x = 8,118.08 × 1,715.36
  4. Step 4: Simplify right side
    5,414.40x = 13,925,429.71
  5. Step 5: Solve for x
    x = 13,925,429.71/5,414.40
  6. Step 6: Final answer
    x = 2,571.92

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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.