Home / 3,126.18-4,689.66-1,047.68

Finding the Fourth Proportional to 3,126.18, 4,689.66 and 1,047.68

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Solution

The fourth proportional to 3,126.18, 4,689.66 and 1,047.68 is: 1,571.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.18 : 4,689.66 = 1,047.68 : x
  2. Step 2: Convert to fraction form
    3,126.18/4,689.66 = 1,047.68/x
  3. Step 3: Cross multiply
    3,126.18x = 4,689.66 × 1,047.68
  4. Step 4: Simplify right side
    3,126.18x = 4,913,262.99
  5. Step 5: Solve for x
    x = 4,913,262.99/3,126.18
  6. Step 6: Final answer
    x = 1,571.65

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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.