Home / 4,115.20-6,172.80-1,037.20

Finding the Fourth Proportional to 4,115.20, 6,172.80 and 1,037.20

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Solution

The fourth proportional to 4,115.20, 6,172.80 and 1,037.20 is: 1,555.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,115.20 : 6,172.80 = 1,037.20 : x
  2. Step 2: Convert to fraction form
    4,115.20/6,172.80 = 1,037.20/x
  3. Step 3: Cross multiply
    4,115.20x = 6,172.80 × 1,037.20
  4. Step 4: Simplify right side
    4,115.20x = 6,402,428.16
  5. Step 5: Solve for x
    x = 6,402,428.16/4,115.20
  6. Step 6: Final answer
    x = 1,555.80

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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.