Home / 1,403.10-2,102.94-992.35

Finding the Fourth Proportional to 1,403.10, 2,102.94 and 992.35

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Solution

The fourth proportional to 1,403.10, 2,102.94 and 992.35 is: 1,487.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.10 : 2,102.94 = 992.35 : x
  2. Step 2: Convert to fraction form
    1,403.10/2,102.94 = 992.35/x
  3. Step 3: Cross multiply
    1,403.10x = 2,102.94 × 992.35
  4. Step 4: Simplify right side
    1,403.10x = 2,086,852.35
  5. Step 5: Solve for x
    x = 2,086,852.35/1,403.10
  6. Step 6: Final answer
    x = 1,487.32

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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.