Home / 2,786.84-4,180.34-1,143.40

Finding the Fourth Proportional to 2,786.84, 4,180.34 and 1,143.40

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Solution

The fourth proportional to 2,786.84, 4,180.34 and 1,143.40 is: 1,715.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.84 : 4,180.34 = 1,143.40 : x
  2. Step 2: Convert to fraction form
    2,786.84/4,180.34 = 1,143.40/x
  3. Step 3: Cross multiply
    2,786.84x = 4,180.34 × 1,143.40
  4. Step 4: Simplify right side
    2,786.84x = 4,779,800.76
  5. Step 5: Solve for x
    x = 4,779,800.76/2,786.84
  6. Step 6: Final answer
    x = 1,715.13

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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.