Home / 2,602.85-3,902.65-1,215.59

Finding the Fourth Proportional to 2,602.85, 3,902.65 and 1,215.59

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Solution

The fourth proportional to 2,602.85, 3,902.65 and 1,215.59 is: 1,822.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,602.85 : 3,902.65 = 1,215.59 : x
  2. Step 2: Convert to fraction form
    2,602.85/3,902.65 = 1,215.59/x
  3. Step 3: Cross multiply
    2,602.85x = 3,902.65 × 1,215.59
  4. Step 4: Simplify right side
    2,602.85x = 4,743,999.76
  5. Step 5: Solve for x
    x = 4,743,999.76/2,602.85
  6. Step 6: Final answer
    x = 1,822.62

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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.