Home / 5,430.20-8,145.45-2,659.10

Finding the Fourth Proportional to 5,430.20, 8,145.45 and 2,659.10

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Solution

The fourth proportional to 5,430.20, 8,145.45 and 2,659.10 is: 3,988.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.20 : 8,145.45 = 2,659.10 : x
  2. Step 2: Convert to fraction form
    5,430.20/8,145.45 = 2,659.10/x
  3. Step 3: Cross multiply
    5,430.20x = 8,145.45 × 2,659.10
  4. Step 4: Simplify right side
    5,430.20x = 21,659,525.37
  5. Step 5: Solve for x
    x = 21,659,525.37/5,430.20
  6. Step 6: Final answer
    x = 3,988.72

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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.