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Finding the Fourth Proportional to 4,607.20, 6,910.80 and 1,320.22

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Solution

The fourth proportional to 4,607.20, 6,910.80 and 1,320.22 is: 1,980.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,607.20 : 6,910.80 = 1,320.22 : x
  2. Step 2: Convert to fraction form
    4,607.20/6,910.80 = 1,320.22/x
  3. Step 3: Cross multiply
    4,607.20x = 6,910.80 × 1,320.22
  4. Step 4: Simplify right side
    4,607.20x = 9,123,776.38
  5. Step 5: Solve for x
    x = 9,123,776.38/4,607.20
  6. Step 6: Final answer
    x = 1,980.33

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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.