Home / 1,426.04-2,138.60-841.32

Finding the Fourth Proportional to 1,426.04, 2,138.60 and 841.32

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Solution

The fourth proportional to 1,426.04, 2,138.60 and 841.32 is: 1,261.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.04 : 2,138.60 = 841.32 : x
  2. Step 2: Convert to fraction form
    1,426.04/2,138.60 = 841.32/x
  3. Step 3: Cross multiply
    1,426.04x = 2,138.60 × 841.32
  4. Step 4: Simplify right side
    1,426.04x = 1,799,242.75
  5. Step 5: Solve for x
    x = 1,799,242.75/1,426.04
  6. Step 6: Final answer
    x = 1,261.71

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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.