Home / 2,275.64-3,415.28-1,180.30

Finding the Fourth Proportional to 2,275.64, 3,415.28 and 1,180.30

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Solution

The fourth proportional to 2,275.64, 3,415.28 and 1,180.30 is: 1,771.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.64 : 3,415.28 = 1,180.30 : x
  2. Step 2: Convert to fraction form
    2,275.64/3,415.28 = 1,180.30/x
  3. Step 3: Cross multiply
    2,275.64x = 3,415.28 × 1,180.30
  4. Step 4: Simplify right side
    2,275.64x = 4,031,054.98
  5. Step 5: Solve for x
    x = 4,031,054.98/2,275.64
  6. Step 6: Final answer
    x = 1,771.39

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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.