Home / 5,430.40-8,145.60-2,797.90

Finding the Fourth Proportional to 5,430.40, 8,145.60 and 2,797.90

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Solution

The fourth proportional to 5,430.40, 8,145.60 and 2,797.90 is: 4,196.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.40 : 8,145.60 = 2,797.90 : x
  2. Step 2: Convert to fraction form
    5,430.40/8,145.60 = 2,797.90/x
  3. Step 3: Cross multiply
    5,430.40x = 8,145.60 × 2,797.90
  4. Step 4: Simplify right side
    5,430.40x = 22,790,574.24
  5. Step 5: Solve for x
    x = 22,790,574.24/5,430.40
  6. Step 6: Final answer
    x = 4,196.85

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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.