Home / 1,319.37-1,977.88-625.61

Finding the Fourth Proportional to 1,319.37, 1,977.88 and 625.61

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Solution

The fourth proportional to 1,319.37, 1,977.88 and 625.61 is: 937.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.37 : 1,977.88 = 625.61 : x
  2. Step 2: Convert to fraction form
    1,319.37/1,977.88 = 625.61/x
  3. Step 3: Cross multiply
    1,319.37x = 1,977.88 × 625.61
  4. Step 4: Simplify right side
    1,319.37x = 1,237,381.51
  5. Step 5: Solve for x
    x = 1,237,381.51/1,319.37
  6. Step 6: Final answer
    x = 937.86

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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.