Home / 3,579.09-4,939.02-1,985.69

Finding the Fourth Proportional to 3,579.09, 4,939.02 and 1,985.69

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Solution

The fourth proportional to 3,579.09, 4,939.02 and 1,985.69 is: 2,740.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.09 : 4,939.02 = 1,985.69 : x
  2. Step 2: Convert to fraction form
    3,579.09/4,939.02 = 1,985.69/x
  3. Step 3: Cross multiply
    3,579.09x = 4,939.02 × 1,985.69
  4. Step 4: Simplify right side
    3,579.09x = 9,807,337.93
  5. Step 5: Solve for x
    x = 9,807,337.93/3,579.09
  6. Step 6: Final answer
    x = 2,740.18

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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.