Home / 1,645.18-2,267.80-1,379.50

Finding the Fourth Proportional to 1,645.18, 2,267.80 and 1,379.50

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Solution

The fourth proportional to 1,645.18, 2,267.80 and 1,379.50 is: 1,901.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.18 : 2,267.80 = 1,379.50 : x
  2. Step 2: Convert to fraction form
    1,645.18/2,267.80 = 1,379.50/x
  3. Step 3: Cross multiply
    1,645.18x = 2,267.80 × 1,379.50
  4. Step 4: Simplify right side
    1,645.18x = 3,128,430.10
  5. Step 5: Solve for x
    x = 3,128,430.10/1,645.18
  6. Step 6: Final answer
    x = 1,901.57

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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.