Home / 2,812.18-4,218.84-1,426.30

Finding the Fourth Proportional to 2,812.18, 4,218.84 and 1,426.30

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Solution

The fourth proportional to 2,812.18, 4,218.84 and 1,426.30 is: 2,139.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.18 : 4,218.84 = 1,426.30 : x
  2. Step 2: Convert to fraction form
    2,812.18/4,218.84 = 1,426.30/x
  3. Step 3: Cross multiply
    2,812.18x = 4,218.84 × 1,426.30
  4. Step 4: Simplify right side
    2,812.18x = 6,017,331.49
  5. Step 5: Solve for x
    x = 6,017,331.49/2,812.18
  6. Step 6: Final answer
    x = 2,139.74

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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.