Home / 7,018.11-9,687-4,149.50

Finding the Fourth Proportional to 7,018.11, 9,687 and 4,149.50

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Solution

The fourth proportional to 7,018.11, 9,687 and 4,149.50 is: 5,727.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,018.11 : 9,687 = 4,149.50 : x
  2. Step 2: Convert to fraction form
    7,018.11/9,687 = 4,149.50/x
  3. Step 3: Cross multiply
    7,018.11x = 9,687 × 4,149.50
  4. Step 4: Simplify right side
    7,018.11x = 40,196,158.07
  5. Step 5: Solve for x
    x = 40,196,158.07/7,018.11
  6. Step 6: Final answer
    x = 5,727.49

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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.