Home / 5,490.20-8,235.30-4,885.40

Finding the Fourth Proportional to 5,490.20, 8,235.30 and 4,885.40

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Solution

The fourth proportional to 5,490.20, 8,235.30 and 4,885.40 is: 7,328.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.20 : 8,235.30 = 4,885.40 : x
  2. Step 2: Convert to fraction form
    5,490.20/8,235.30 = 4,885.40/x
  3. Step 3: Cross multiply
    5,490.20x = 8,235.30 × 4,885.40
  4. Step 4: Simplify right side
    5,490.20x = 40,232,734.62
  5. Step 5: Solve for x
    x = 40,232,734.62/5,490.20
  6. Step 6: Final answer
    x = 7,328.10

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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.