Home / 4,880.20-7,320.30-4,005.40

Finding the Fourth Proportional to 4,880.20, 7,320.30 and 4,005.40

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Solution

The fourth proportional to 4,880.20, 7,320.30 and 4,005.40 is: 6,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,880.20 : 7,320.30 = 4,005.40 : x
  2. Step 2: Convert to fraction form
    4,880.20/7,320.30 = 4,005.40/x
  3. Step 3: Cross multiply
    4,880.20x = 7,320.30 × 4,005.40
  4. Step 4: Simplify right side
    4,880.20x = 29,320,729.62
  5. Step 5: Solve for x
    x = 29,320,729.62/4,880.20
  6. Step 6: Final answer
    x = 6,008.10

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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.