Home / 1,403.02-2,104.44-429.13

Finding the Fourth Proportional to 1,403.02, 2,104.44 and 429.13

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Solution

The fourth proportional to 1,403.02, 2,104.44 and 429.13 is: 643.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.02 : 2,104.44 = 429.13 : x
  2. Step 2: Convert to fraction form
    1,403.02/2,104.44 = 429.13/x
  3. Step 3: Cross multiply
    1,403.02x = 2,104.44 × 429.13
  4. Step 4: Simplify right side
    1,403.02x = 903,078.34
  5. Step 5: Solve for x
    x = 903,078.34/1,403.02
  6. Step 6: Final answer
    x = 643.67

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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.