Home / 1,421.46-2,133.09-555.75

Finding the Fourth Proportional to 1,421.46, 2,133.09 and 555.75

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Solution

The fourth proportional to 1,421.46, 2,133.09 and 555.75 is: 833.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.46 : 2,133.09 = 555.75 : x
  2. Step 2: Convert to fraction form
    1,421.46/2,133.09 = 555.75/x
  3. Step 3: Cross multiply
    1,421.46x = 2,133.09 × 555.75
  4. Step 4: Simplify right side
    1,421.46x = 1,185,464.77
  5. Step 5: Solve for x
    x = 1,185,464.77/1,421.46
  6. Step 6: Final answer
    x = 833.98

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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.