Home / 2,478.39-3,720.89-1,439.14

Finding the Fourth Proportional to 2,478.39, 3,720.89 and 1,439.14

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Solution

The fourth proportional to 2,478.39, 3,720.89 and 1,439.14 is: 2,160.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.39 : 3,720.89 = 1,439.14 : x
  2. Step 2: Convert to fraction form
    2,478.39/3,720.89 = 1,439.14/x
  3. Step 3: Cross multiply
    2,478.39x = 3,720.89 × 1,439.14
  4. Step 4: Simplify right side
    2,478.39x = 5,354,881.63
  5. Step 5: Solve for x
    x = 5,354,881.63/2,478.39
  6. Step 6: Final answer
    x = 2,160.63

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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.