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Finding the Fourth Proportional to 6,890.95, 9,509.73 and 3,747.14

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Solution

The fourth proportional to 6,890.95, 9,509.73 and 3,747.14 is: 5,171.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,890.95 : 9,509.73 = 3,747.14 : x
  2. Step 2: Convert to fraction form
    6,890.95/9,509.73 = 3,747.14/x
  3. Step 3: Cross multiply
    6,890.95x = 9,509.73 × 3,747.14
  4. Step 4: Simplify right side
    6,890.95x = 35,634,242.12
  5. Step 5: Solve for x
    x = 35,634,242.12/6,890.95
  6. Step 6: Final answer
    x = 5,171.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.