Home / 2,776.28-4,165.16-1,389.22

Finding the Fourth Proportional to 2,776.28, 4,165.16 and 1,389.22

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Solution

The fourth proportional to 2,776.28, 4,165.16 and 1,389.22 is: 2,084.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.28 : 4,165.16 = 1,389.22 : x
  2. Step 2: Convert to fraction form
    2,776.28/4,165.16 = 1,389.22/x
  3. Step 3: Cross multiply
    2,776.28x = 4,165.16 × 1,389.22
  4. Step 4: Simplify right side
    2,776.28x = 5,786,306.22
  5. Step 5: Solve for x
    x = 5,786,306.22/2,776.28
  6. Step 6: Final answer
    x = 2,084.20

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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.