Home / 5,430.69-8,146.12-2,143.75

Finding the Fourth Proportional to 5,430.69, 8,146.12 and 2,143.75

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Solution

The fourth proportional to 5,430.69, 8,146.12 and 2,143.75 is: 3,215.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.69 : 8,146.12 = 2,143.75 : x
  2. Step 2: Convert to fraction form
    5,430.69/8,146.12 = 2,143.75/x
  3. Step 3: Cross multiply
    5,430.69x = 8,146.12 × 2,143.75
  4. Step 4: Simplify right side
    5,430.69x = 17,463,244.75
  5. Step 5: Solve for x
    x = 17,463,244.75/5,430.69
  6. Step 6: Final answer
    x = 3,215.66

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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.