Home / 1,426.13-2,139.20-452.23

Finding the Fourth Proportional to 1,426.13, 2,139.20 and 452.23

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Solution

The fourth proportional to 1,426.13, 2,139.20 and 452.23 is: 678.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.13 : 2,139.20 = 452.23 : x
  2. Step 2: Convert to fraction form
    1,426.13/2,139.20 = 452.23/x
  3. Step 3: Cross multiply
    1,426.13x = 2,139.20 × 452.23
  4. Step 4: Simplify right side
    1,426.13x = 967,410.42
  5. Step 5: Solve for x
    x = 967,410.42/1,426.13
  6. Step 6: Final answer
    x = 678.35

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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.