Home / 7,036.21-9,709.85-3,892.40

Finding the Fourth Proportional to 7,036.21, 9,709.85 and 3,892.40

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Solution

The fourth proportional to 7,036.21, 9,709.85 and 3,892.40 is: 5,371.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,036.21 : 9,709.85 = 3,892.40 : x
  2. Step 2: Convert to fraction form
    7,036.21/9,709.85 = 3,892.40/x
  3. Step 3: Cross multiply
    7,036.21x = 9,709.85 × 3,892.40
  4. Step 4: Simplify right side
    7,036.21x = 37,794,620.14
  5. Step 5: Solve for x
    x = 37,794,620.14/7,036.21
  6. Step 6: Final answer
    x = 5,371.45

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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.