Home / 2,780.67-3,837.12-1,585.50

Finding the Fourth Proportional to 2,780.67, 3,837.12 and 1,585.50

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Solution

The fourth proportional to 2,780.67, 3,837.12 and 1,585.50 is: 2,187.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.67 : 3,837.12 = 1,585.50 : x
  2. Step 2: Convert to fraction form
    2,780.67/3,837.12 = 1,585.50/x
  3. Step 3: Cross multiply
    2,780.67x = 3,837.12 × 1,585.50
  4. Step 4: Simplify right side
    2,780.67x = 6,083,753.76
  5. Step 5: Solve for x
    x = 6,083,753.76/2,780.67
  6. Step 6: Final answer
    x = 2,187.87

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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.