Home / 2,985.59-4,119.90-1,866.73

Finding the Fourth Proportional to 2,985.59, 4,119.90 and 1,866.73

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Solution

The fourth proportional to 2,985.59, 4,119.90 and 1,866.73 is: 2,575.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.59 : 4,119.90 = 1,866.73 : x
  2. Step 2: Convert to fraction form
    2,985.59/4,119.90 = 1,866.73/x
  3. Step 3: Cross multiply
    2,985.59x = 4,119.90 × 1,866.73
  4. Step 4: Simplify right side
    2,985.59x = 7,690,740.93
  5. Step 5: Solve for x
    x = 7,690,740.93/2,985.59
  6. Step 6: Final answer
    x = 2,575.95

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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.