Home / 5,289.35-7,933.95-1,780.13

Finding the Fourth Proportional to 5,289.35, 7,933.95 and 1,780.13

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Solution

The fourth proportional to 5,289.35, 7,933.95 and 1,780.13 is: 2,670.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,289.35 : 7,933.95 = 1,780.13 : x
  2. Step 2: Convert to fraction form
    5,289.35/7,933.95 = 1,780.13/x
  3. Step 3: Cross multiply
    5,289.35x = 7,933.95 × 1,780.13
  4. Step 4: Simplify right side
    5,289.35x = 14,123,437.62
  5. Step 5: Solve for x
    x = 14,123,437.62/5,289.35
  6. Step 6: Final answer
    x = 2,670.16

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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.