Home / 7,270.20-10,905.30-4,807.80

Finding the Fourth Proportional to 7,270.20, 10,905.30 and 4,807.80

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Solution

The fourth proportional to 7,270.20, 10,905.30 and 4,807.80 is: 7,211.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,270.20 : 10,905.30 = 4,807.80 : x
  2. Step 2: Convert to fraction form
    7,270.20/10,905.30 = 4,807.80/x
  3. Step 3: Cross multiply
    7,270.20x = 10,905.30 × 4,807.80
  4. Step 4: Simplify right side
    7,270.20x = 52,430,501.34
  5. Step 5: Solve for x
    x = 52,430,501.34/7,270.20
  6. Step 6: Final answer
    x = 7,211.70

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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.