Home / 2,376.40-3,278.60-1,381.45

Finding the Fourth Proportional to 2,376.40, 3,278.60 and 1,381.45

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Solution

The fourth proportional to 2,376.40, 3,278.60 and 1,381.45 is: 1,905.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,376.40 : 3,278.60 = 1,381.45 : x
  2. Step 2: Convert to fraction form
    2,376.40/3,278.60 = 1,381.45/x
  3. Step 3: Cross multiply
    2,376.40x = 3,278.60 × 1,381.45
  4. Step 4: Simplify right side
    2,376.40x = 4,529,215.06
  5. Step 5: Solve for x
    x = 4,529,215.06/2,376.40
  6. Step 6: Final answer
    x = 1,905.91

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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.