Home / 5,430.64-8,149.32-2,143.16

Finding the Fourth Proportional to 5,430.64, 8,149.32 and 2,143.16

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Solution

The fourth proportional to 5,430.64, 8,149.32 and 2,143.16 is: 3,216.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.64 : 8,149.32 = 2,143.16 : x
  2. Step 2: Convert to fraction form
    5,430.64/8,149.32 = 2,143.16/x
  3. Step 3: Cross multiply
    5,430.64x = 8,149.32 × 2,143.16
  4. Step 4: Simplify right side
    5,430.64x = 17,465,296.65
  5. Step 5: Solve for x
    x = 17,465,296.65/5,430.64
  6. Step 6: Final answer
    x = 3,216.07

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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.