Home / 1,379.18-1,902.51-1,047.08

Finding the Fourth Proportional to 1,379.18, 1,902.51 and 1,047.08

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Solution

The fourth proportional to 1,379.18, 1,902.51 and 1,047.08 is: 1,444.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379.18 : 1,902.51 = 1,047.08 : x
  2. Step 2: Convert to fraction form
    1,379.18/1,902.51 = 1,047.08/x
  3. Step 3: Cross multiply
    1,379.18x = 1,902.51 × 1,047.08
  4. Step 4: Simplify right side
    1,379.18x = 1,992,070.66
  5. Step 5: Solve for x
    x = 1,992,070.66/1,379.18
  6. Step 6: Final answer
    x = 1,444.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.