Home / 2,430.80-3,354.52-1,382.88

Finding the Fourth Proportional to 2,430.80, 3,354.52 and 1,382.88

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Solution

The fourth proportional to 2,430.80, 3,354.52 and 1,382.88 is: 1,908.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.80 : 3,354.52 = 1,382.88 : x
  2. Step 2: Convert to fraction form
    2,430.80/3,354.52 = 1,382.88/x
  3. Step 3: Cross multiply
    2,430.80x = 3,354.52 × 1,382.88
  4. Step 4: Simplify right side
    2,430.80x = 4,638,898.62
  5. Step 5: Solve for x
    x = 4,638,898.62/2,430.80
  6. Step 6: Final answer
    x = 1,908.38

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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.