Home / 5,210.89-7,808.50-2,087.80

Finding the Fourth Proportional to 5,210.89, 7,808.50 and 2,087.80

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Solution

The fourth proportional to 5,210.89, 7,808.50 and 2,087.80 is: 3,128.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.89 : 7,808.50 = 2,087.80 : x
  2. Step 2: Convert to fraction form
    5,210.89/7,808.50 = 2,087.80/x
  3. Step 3: Cross multiply
    5,210.89x = 7,808.50 × 2,087.80
  4. Step 4: Simplify right side
    5,210.89x = 16,302,586.30
  5. Step 5: Solve for x
    x = 16,302,586.30/5,210.89
  6. Step 6: Final answer
    x = 3,128.56

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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.