Home / 1,780.60-2,456.58-1,108.36

Finding the Fourth Proportional to 1,780.60, 2,456.58 and 1,108.36

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Solution

The fourth proportional to 1,780.60, 2,456.58 and 1,108.36 is: 1,529.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.60 : 2,456.58 = 1,108.36 : x
  2. Step 2: Convert to fraction form
    1,780.60/2,456.58 = 1,108.36/x
  3. Step 3: Cross multiply
    1,780.60x = 2,456.58 × 1,108.36
  4. Step 4: Simplify right side
    1,780.60x = 2,722,775.01
  5. Step 5: Solve for x
    x = 2,722,775.01/1,780.60
  6. Step 6: Final answer
    x = 1,529.13

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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.