Home / 1,542.05-2,127.80-983.00

Finding the Fourth Proportional to 1,542.05, 2,127.80 and 983.00

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Solution

The fourth proportional to 1,542.05, 2,127.80 and 983.00 is: 1,356.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.05 : 2,127.80 = 983.00 : x
  2. Step 2: Convert to fraction form
    1,542.05/2,127.80 = 983.00/x
  3. Step 3: Cross multiply
    1,542.05x = 2,127.80 × 983.00
  4. Step 4: Simplify right side
    1,542.05x = 2,091,635.18
  5. Step 5: Solve for x
    x = 2,091,635.18/1,542.05
  6. Step 6: Final answer
    x = 1,356.40

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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.