Home / 1,385.19-1,907.48-1,237.77

Finding the Fourth Proportional to 1,385.19, 1,907.48 and 1,237.77

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Solution

The fourth proportional to 1,385.19, 1,907.48 and 1,237.77 is: 1,704.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.19 : 1,907.48 = 1,237.77 : x
  2. Step 2: Convert to fraction form
    1,385.19/1,907.48 = 1,237.77/x
  3. Step 3: Cross multiply
    1,385.19x = 1,907.48 × 1,237.77
  4. Step 4: Simplify right side
    1,385.19x = 2,361,024.61
  5. Step 5: Solve for x
    x = 2,361,024.61/1,385.19
  6. Step 6: Final answer
    x = 1,704.48

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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.