Home / 5,621.38-8,430.53-2,111.11

Finding the Fourth Proportional to 5,621.38, 8,430.53 and 2,111.11

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Solution

The fourth proportional to 5,621.38, 8,430.53 and 2,111.11 is: 3,166.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.38 : 8,430.53 = 2,111.11 : x
  2. Step 2: Convert to fraction form
    5,621.38/8,430.53 = 2,111.11/x
  3. Step 3: Cross multiply
    5,621.38x = 8,430.53 × 2,111.11
  4. Step 4: Simplify right side
    5,621.38x = 17,797,797.17
  5. Step 5: Solve for x
    x = 17,797,797.17/5,621.38
  6. Step 6: Final answer
    x = 3,166.09

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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.