Home / 5,637.65-7,780.34-3,119.86

Finding the Fourth Proportional to 5,637.65, 7,780.34 and 3,119.86

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Solution

The fourth proportional to 5,637.65, 7,780.34 and 3,119.86 is: 4,305.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,637.65 : 7,780.34 = 3,119.86 : x
  2. Step 2: Convert to fraction form
    5,637.65/7,780.34 = 3,119.86/x
  3. Step 3: Cross multiply
    5,637.65x = 7,780.34 × 3,119.86
  4. Step 4: Simplify right side
    5,637.65x = 24,273,598.80
  5. Step 5: Solve for x
    x = 24,273,598.80/5,637.65
  6. Step 6: Final answer
    x = 4,305.63

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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.