Home / 1,637.20-2,455.80-541.27

Finding the Fourth Proportional to 1,637.20, 2,455.80 and 541.27

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Solution

The fourth proportional to 1,637.20, 2,455.80 and 541.27 is: 811.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.20 : 2,455.80 = 541.27 : x
  2. Step 2: Convert to fraction form
    1,637.20/2,455.80 = 541.27/x
  3. Step 3: Cross multiply
    1,637.20x = 2,455.80 × 541.27
  4. Step 4: Simplify right side
    1,637.20x = 1,329,242.70
  5. Step 5: Solve for x
    x = 1,329,242.70/1,637.20
  6. Step 6: Final answer
    x = 811.90

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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.