Home / 7,538.55-11,305.80-3,155.10

Finding the Fourth Proportional to 7,538.55, 11,305.80 and 3,155.10

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Solution

The fourth proportional to 7,538.55, 11,305.80 and 3,155.10 is: 4,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,538.55 : 11,305.80 = 3,155.10 : x
  2. Step 2: Convert to fraction form
    7,538.55/11,305.80 = 3,155.10/x
  3. Step 3: Cross multiply
    7,538.55x = 11,305.80 × 3,155.10
  4. Step 4: Simplify right side
    7,538.55x = 35,670,929.58
  5. Step 5: Solve for x
    x = 35,670,929.58/7,538.55
  6. Step 6: Final answer
    x = 4,731.80

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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.