Home / 3,460.78-5,187.32-1,380.22

Finding the Fourth Proportional to 3,460.78, 5,187.32 and 1,380.22

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Solution

The fourth proportional to 3,460.78, 5,187.32 and 1,380.22 is: 2,068.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,460.78 : 5,187.32 = 1,380.22 : x
  2. Step 2: Convert to fraction form
    3,460.78/5,187.32 = 1,380.22/x
  3. Step 3: Cross multiply
    3,460.78x = 5,187.32 × 1,380.22
  4. Step 4: Simplify right side
    3,460.78x = 7,159,642.81
  5. Step 5: Solve for x
    x = 7,159,642.81/3,460.78
  6. Step 6: Final answer
    x = 2,068.79

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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.