Home / 8,430.23-12,645.25-2,189.69

Finding the Fourth Proportional to 8,430.23, 12,645.25 and 2,189.69

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Solution

The fourth proportional to 8,430.23, 12,645.25 and 2,189.69 is: 3,284.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.23 : 12,645.25 = 2,189.69 : x
  2. Step 2: Convert to fraction form
    8,430.23/12,645.25 = 2,189.69/x
  3. Step 3: Cross multiply
    8,430.23x = 12,645.25 × 2,189.69
  4. Step 4: Simplify right side
    8,430.23x = 27,689,156.19
  5. Step 5: Solve for x
    x = 27,689,156.19/8,430.23
  6. Step 6: Final answer
    x = 3,284.51

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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.