Home / 5,621.76-8,430.55-1,922.99

Finding the Fourth Proportional to 5,621.76, 8,430.55 and 1,922.99

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Solution

The fourth proportional to 5,621.76, 8,430.55 and 1,922.99 is: 2,883.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.76 : 8,430.55 = 1,922.99 : x
  2. Step 2: Convert to fraction form
    5,621.76/8,430.55 = 1,922.99/x
  3. Step 3: Cross multiply
    5,621.76x = 8,430.55 × 1,922.99
  4. Step 4: Simplify right side
    5,621.76x = 16,211,816.38
  5. Step 5: Solve for x
    x = 16,211,816.38/5,621.76
  6. Step 6: Final answer
    x = 2,883.76

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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.