Home / 3,125.45-4,688.28-1,276.49

Finding the Fourth Proportional to 3,125.45, 4,688.28 and 1,276.49

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Solution

The fourth proportional to 3,125.45, 4,688.28 and 1,276.49 is: 1,914.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.45 : 4,688.28 = 1,276.49 : x
  2. Step 2: Convert to fraction form
    3,125.45/4,688.28 = 1,276.49/x
  3. Step 3: Cross multiply
    3,125.45x = 4,688.28 × 1,276.49
  4. Step 4: Simplify right side
    3,125.45x = 5,984,554.26
  5. Step 5: Solve for x
    x = 5,984,554.26/3,125.45
  6. Step 6: Final answer
    x = 1,914.78

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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.