Home / 3,778.49-5,665.88-1,145.50

Finding the Fourth Proportional to 3,778.49, 5,665.88 and 1,145.50

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Solution

The fourth proportional to 3,778.49, 5,665.88 and 1,145.50 is: 1,717.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.49 : 5,665.88 = 1,145.50 : x
  2. Step 2: Convert to fraction form
    3,778.49/5,665.88 = 1,145.50/x
  3. Step 3: Cross multiply
    3,778.49x = 5,665.88 × 1,145.50
  4. Step 4: Simplify right side
    3,778.49x = 6,490,254.24
  5. Step 5: Solve for x
    x = 6,490,254.24/3,778.49
  6. Step 6: Final answer
    x = 1,717.69

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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.