Home / 1,542.58-2,129.46-983.81

Finding the Fourth Proportional to 1,542.58, 2,129.46 and 983.81

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Solution

The fourth proportional to 1,542.58, 2,129.46 and 983.81 is: 1,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.58 : 2,129.46 = 983.81 : x
  2. Step 2: Convert to fraction form
    1,542.58/2,129.46 = 983.81/x
  3. Step 3: Cross multiply
    1,542.58x = 2,129.46 × 983.81
  4. Step 4: Simplify right side
    1,542.58x = 2,094,984.04
  5. Step 5: Solve for x
    x = 2,094,984.04/1,542.58
  6. Step 6: Final answer
    x = 1,358.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.