Home / 5,620.74-8,430.48-2,155.56

Finding the Fourth Proportional to 5,620.74, 8,430.48 and 2,155.56

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Solution

The fourth proportional to 5,620.74, 8,430.48 and 2,155.56 is: 3,233.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.74 : 8,430.48 = 2,155.56 : x
  2. Step 2: Convert to fraction form
    5,620.74/8,430.48 = 2,155.56/x
  3. Step 3: Cross multiply
    5,620.74x = 8,430.48 × 2,155.56
  4. Step 4: Simplify right side
    5,620.74x = 18,172,405.47
  5. Step 5: Solve for x
    x = 18,172,405.47/5,620.74
  6. Step 6: Final answer
    x = 3,233.10

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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.