Home / 2,430.78-3,354.54-1,382.90

Finding the Fourth Proportional to 2,430.78, 3,354.54 and 1,382.90

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Solution

The fourth proportional to 2,430.78, 3,354.54 and 1,382.90 is: 1,908.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.78 : 3,354.54 = 1,382.90 : x
  2. Step 2: Convert to fraction form
    2,430.78/3,354.54 = 1,382.90/x
  3. Step 3: Cross multiply
    2,430.78x = 3,354.54 × 1,382.90
  4. Step 4: Simplify right side
    2,430.78x = 4,638,993.37
  5. Step 5: Solve for x
    x = 4,638,993.37/2,430.78
  6. Step 6: Final answer
    x = 1,908.44

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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.