Home / 6,720.12-10,078.56-2,103.12

Finding the Fourth Proportional to 6,720.12, 10,078.56 and 2,103.12

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Solution

The fourth proportional to 6,720.12, 10,078.56 and 2,103.12 is: 3,154.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.12 : 10,078.56 = 2,103.12 : x
  2. Step 2: Convert to fraction form
    6,720.12/10,078.56 = 2,103.12/x
  3. Step 3: Cross multiply
    6,720.12x = 10,078.56 × 2,103.12
  4. Step 4: Simplify right side
    6,720.12x = 21,196,421.11
  5. Step 5: Solve for x
    x = 21,196,421.11/6,720.12
  6. Step 6: Final answer
    x = 3,154.17

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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.