Home / 7,127.84-9,835.65-4,143.05

Finding the Fourth Proportional to 7,127.84, 9,835.65 and 4,143.05

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Solution

The fourth proportional to 7,127.84, 9,835.65 and 4,143.05 is: 5,716.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.84 : 9,835.65 = 4,143.05 : x
  2. Step 2: Convert to fraction form
    7,127.84/9,835.65 = 4,143.05/x
  3. Step 3: Cross multiply
    7,127.84x = 9,835.65 × 4,143.05
  4. Step 4: Simplify right side
    7,127.84x = 40,749,540.55
  5. Step 5: Solve for x
    x = 40,749,540.55/7,127.84
  6. Step 6: Final answer
    x = 5,716.96

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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.