Home / 1,780.20-2,670.30-1,010.92

Finding the Fourth Proportional to 1,780.20, 2,670.30 and 1,010.92

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Solution

The fourth proportional to 1,780.20, 2,670.30 and 1,010.92 is: 1,516.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.20 : 2,670.30 = 1,010.92 : x
  2. Step 2: Convert to fraction form
    1,780.20/2,670.30 = 1,010.92/x
  3. Step 3: Cross multiply
    1,780.20x = 2,670.30 × 1,010.92
  4. Step 4: Simplify right side
    1,780.20x = 2,699,459.68
  5. Step 5: Solve for x
    x = 2,699,459.68/1,780.20
  6. Step 6: Final answer
    x = 1,516.38

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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.