Home / 5,618.36-8,428.98-1,722.80

Finding the Fourth Proportional to 5,618.36, 8,428.98 and 1,722.80

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Solution

The fourth proportional to 5,618.36, 8,428.98 and 1,722.80 is: 2,584.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.36 : 8,428.98 = 1,722.80 : x
  2. Step 2: Convert to fraction form
    5,618.36/8,428.98 = 1,722.80/x
  3. Step 3: Cross multiply
    5,618.36x = 8,428.98 × 1,722.80
  4. Step 4: Simplify right side
    5,618.36x = 14,521,446.74
  5. Step 5: Solve for x
    x = 14,521,446.74/5,618.36
  6. Step 6: Final answer
    x = 2,584.64

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1.5x scale

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.