Home / 2,378.08-3,278.64-2,360.80

Finding the Fourth Proportional to 2,378.08, 3,278.64 and 2,360.80

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Solution

The fourth proportional to 2,378.08, 3,278.64 and 2,360.80 is: 3,254.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.08 : 3,278.64 = 2,360.80 : x
  2. Step 2: Convert to fraction form
    2,378.08/3,278.64 = 2,360.80/x
  3. Step 3: Cross multiply
    2,378.08x = 3,278.64 × 2,360.80
  4. Step 4: Simplify right side
    2,378.08x = 7,740,213.31
  5. Step 5: Solve for x
    x = 7,740,213.31/2,378.08
  6. Step 6: Final answer
    x = 3,254.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.