Home / 2,685.79-4,029.08-1,020.55

Finding the Fourth Proportional to 2,685.79, 4,029.08 and 1,020.55

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Solution

The fourth proportional to 2,685.79, 4,029.08 and 1,020.55 is: 1,530.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.79 : 4,029.08 = 1,020.55 : x
  2. Step 2: Convert to fraction form
    2,685.79/4,029.08 = 1,020.55/x
  3. Step 3: Cross multiply
    2,685.79x = 4,029.08 × 1,020.55
  4. Step 4: Simplify right side
    2,685.79x = 4,111,877.59
  5. Step 5: Solve for x
    x = 4,111,877.59/2,685.79
  6. Step 6: Final answer
    x = 1,530.98

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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.