Home / 1,426.12-2,139.46-604.39

Finding the Fourth Proportional to 1,426.12, 2,139.46 and 604.39

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Solution

The fourth proportional to 1,426.12, 2,139.46 and 604.39 is: 906.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.12 : 2,139.46 = 604.39 : x
  2. Step 2: Convert to fraction form
    1,426.12/2,139.46 = 604.39/x
  3. Step 3: Cross multiply
    1,426.12x = 2,139.46 × 604.39
  4. Step 4: Simplify right side
    1,426.12x = 1,293,068.23
  5. Step 5: Solve for x
    x = 1,293,068.23/1,426.12
  6. Step 6: Final answer
    x = 906.70

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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.