Home / 4,991.20-7,478.70-4,294.60

Finding the Fourth Proportional to 4,991.20, 7,478.70 and 4,294.60

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Solution

The fourth proportional to 4,991.20, 7,478.70 and 4,294.60 is: 6,434.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.20 : 7,478.70 = 4,294.60 : x
  2. Step 2: Convert to fraction form
    4,991.20/7,478.70 = 4,294.60/x
  3. Step 3: Cross multiply
    4,991.20x = 7,478.70 × 4,294.60
  4. Step 4: Simplify right side
    4,991.20x = 32,118,025.02
  5. Step 5: Solve for x
    x = 32,118,025.02/4,991.20
  6. Step 6: Final answer
    x = 6,434.93

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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.