Home / 5,430.25-8,145.47-2,143.32

Finding the Fourth Proportional to 5,430.25, 8,145.47 and 2,143.32

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Solution

The fourth proportional to 5,430.25, 8,145.47 and 2,143.32 is: 3,215.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.25 : 8,145.47 = 2,143.32 : x
  2. Step 2: Convert to fraction form
    5,430.25/8,145.47 = 2,143.32/x
  3. Step 3: Cross multiply
    5,430.25x = 8,145.47 × 2,143.32
  4. Step 4: Simplify right side
    5,430.25x = 17,458,348.76
  5. Step 5: Solve for x
    x = 17,458,348.76/5,430.25
  6. Step 6: Final answer
    x = 3,215.02

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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.