Home / 1,426.76-2,140.10-1,080.75

Finding the Fourth Proportional to 1,426.76, 2,140.10 and 1,080.75

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Solution

The fourth proportional to 1,426.76, 2,140.10 and 1,080.75 is: 1,621.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.76 : 2,140.10 = 1,080.75 : x
  2. Step 2: Convert to fraction form
    1,426.76/2,140.10 = 1,080.75/x
  3. Step 3: Cross multiply
    1,426.76x = 2,140.10 × 1,080.75
  4. Step 4: Simplify right side
    1,426.76x = 2,312,913.08
  5. Step 5: Solve for x
    x = 2,312,913.08/1,426.76
  6. Step 6: Final answer
    x = 1,621.09

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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.