Home / 5,430.20-8,145.30-4,803.80

Finding the Fourth Proportional to 5,430.20, 8,145.30 and 4,803.80

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Solution

The fourth proportional to 5,430.20, 8,145.30 and 4,803.80 is: 7,205.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.20 : 8,145.30 = 4,803.80 : x
  2. Step 2: Convert to fraction form
    5,430.20/8,145.30 = 4,803.80/x
  3. Step 3: Cross multiply
    5,430.20x = 8,145.30 × 4,803.80
  4. Step 4: Simplify right side
    5,430.20x = 39,128,392.14
  5. Step 5: Solve for x
    x = 39,128,392.14/5,430.20
  6. Step 6: Final answer
    x = 7,205.70

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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.