Home / 1,426.19-2,139.17-452.30

Finding the Fourth Proportional to 1,426.19, 2,139.17 and 452.30

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Solution

The fourth proportional to 1,426.19, 2,139.17 and 452.30 is: 678.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.19 : 2,139.17 = 452.30 : x
  2. Step 2: Convert to fraction form
    1,426.19/2,139.17 = 452.30/x
  3. Step 3: Cross multiply
    1,426.19x = 2,139.17 × 452.30
  4. Step 4: Simplify right side
    1,426.19x = 967,533.63
  5. Step 5: Solve for x
    x = 967,533.63/1,426.19
  6. Step 6: Final answer
    x = 678.41

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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.