Home / 3,780.10-5,670.16-1,147.63

Finding the Fourth Proportional to 3,780.10, 5,670.16 and 1,147.63

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Solution

The fourth proportional to 3,780.10, 5,670.16 and 1,147.63 is: 1,721.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.10 : 5,670.16 = 1,147.63 : x
  2. Step 2: Convert to fraction form
    3,780.10/5,670.16 = 1,147.63/x
  3. Step 3: Cross multiply
    3,780.10x = 5,670.16 × 1,147.63
  4. Step 4: Simplify right side
    3,780.10x = 6,507,245.72
  5. Step 5: Solve for x
    x = 6,507,245.72/3,780.10
  6. Step 6: Final answer
    x = 1,721.45

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1.5x scale

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.