Home / 2,777.16-4,164.66-1,389.72

Finding the Fourth Proportional to 2,777.16, 4,164.66 and 1,389.72

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Solution

The fourth proportional to 2,777.16, 4,164.66 and 1,389.72 is: 2,084.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,777.16 : 4,164.66 = 1,389.72 : x
  2. Step 2: Convert to fraction form
    2,777.16/4,164.66 = 1,389.72/x
  3. Step 3: Cross multiply
    2,777.16x = 4,164.66 × 1,389.72
  4. Step 4: Simplify right side
    2,777.16x = 5,787,711.30
  5. Step 5: Solve for x
    x = 5,787,711.30/2,777.16
  6. Step 6: Final answer
    x = 2,084.04

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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.