Home / 1,403.16-2,104.11-429.03

Finding the Fourth Proportional to 1,403.16, 2,104.11 and 429.03

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Solution

The fourth proportional to 1,403.16, 2,104.11 and 429.03 is: 643.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.16 : 2,104.11 = 429.03 : x
  2. Step 2: Convert to fraction form
    1,403.16/2,104.11 = 429.03/x
  3. Step 3: Cross multiply
    1,403.16x = 2,104.11 × 429.03
  4. Step 4: Simplify right side
    1,403.16x = 902,726.31
  5. Step 5: Solve for x
    x = 902,726.31/1,403.16
  6. Step 6: Final answer
    x = 643.35

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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.