Home / 2,975.40-4,105.17-1,780.29

Finding the Fourth Proportional to 2,975.40, 4,105.17 and 1,780.29

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Solution

The fourth proportional to 2,975.40, 4,105.17 and 1,780.29 is: 2,456.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,975.40 : 4,105.17 = 1,780.29 : x
  2. Step 2: Convert to fraction form
    2,975.40/4,105.17 = 1,780.29/x
  3. Step 3: Cross multiply
    2,975.40x = 4,105.17 × 1,780.29
  4. Step 4: Simplify right side
    2,975.40x = 7,308,393.10
  5. Step 5: Solve for x
    x = 7,308,393.10/2,975.40
  6. Step 6: Final answer
    x = 2,456.27

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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.