Home / 4,209.94-6,313.53-1,988.42

Finding the Fourth Proportional to 4,209.94, 6,313.53 and 1,988.42

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Solution

The fourth proportional to 4,209.94, 6,313.53 and 1,988.42 is: 2,981.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.94 : 6,313.53 = 1,988.42 : x
  2. Step 2: Convert to fraction form
    4,209.94/6,313.53 = 1,988.42/x
  3. Step 3: Cross multiply
    4,209.94x = 6,313.53 × 1,988.42
  4. Step 4: Simplify right side
    4,209.94x = 12,553,965.11
  5. Step 5: Solve for x
    x = 12,553,965.11/4,209.94
  6. Step 6: Final answer
    x = 2,981.98

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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.