Home / 7,538.40-11,311.02-3,156.84

Finding the Fourth Proportional to 7,538.40, 11,311.02 and 3,156.84

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Solution

The fourth proportional to 7,538.40, 11,311.02 and 3,156.84 is: 4,736.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,538.40 : 11,311.02 = 3,156.84 : x
  2. Step 2: Convert to fraction form
    7,538.40/11,311.02 = 3,156.84/x
  3. Step 3: Cross multiply
    7,538.40x = 11,311.02 × 3,156.84
  4. Step 4: Simplify right side
    7,538.40x = 35,707,080.38
  5. Step 5: Solve for x
    x = 35,707,080.38/7,538.40
  6. Step 6: Final answer
    x = 4,736.69

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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.