Home / 5,430.68-8,143.32-2,656.16

Finding the Fourth Proportional to 5,430.68, 8,143.32 and 2,656.16

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Solution

The fourth proportional to 5,430.68, 8,143.32 and 2,656.16 is: 3,982.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.68 : 8,143.32 = 2,656.16 : x
  2. Step 2: Convert to fraction form
    5,430.68/8,143.32 = 2,656.16/x
  3. Step 3: Cross multiply
    5,430.68x = 8,143.32 × 2,656.16
  4. Step 4: Simplify right side
    5,430.68x = 21,629,960.85
  5. Step 5: Solve for x
    x = 21,629,960.85/5,430.68
  6. Step 6: Final answer
    x = 3,982.92

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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.