Home / 3,780.47-5,670.56-1,147.88

Finding the Fourth Proportional to 3,780.47, 5,670.56 and 1,147.88

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Solution

The fourth proportional to 3,780.47, 5,670.56 and 1,147.88 is: 1,721.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.47 : 5,670.56 = 1,147.88 : x
  2. Step 2: Convert to fraction form
    3,780.47/5,670.56 = 1,147.88/x
  3. Step 3: Cross multiply
    3,780.47x = 5,670.56 × 1,147.88
  4. Step 4: Simplify right side
    3,780.47x = 6,509,088.32
  5. Step 5: Solve for x
    x = 6,509,088.32/3,780.47
  6. Step 6: Final answer
    x = 1,721.77

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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.