Home / 2,877.77-4,318.79-2,139.09

Finding the Fourth Proportional to 2,877.77, 4,318.79 and 2,139.09

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Solution

The fourth proportional to 2,877.77, 4,318.79 and 2,139.09 is: 3,210.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.77 : 4,318.79 = 2,139.09 : x
  2. Step 2: Convert to fraction form
    2,877.77/4,318.79 = 2,139.09/x
  3. Step 3: Cross multiply
    2,877.77x = 4,318.79 × 2,139.09
  4. Step 4: Simplify right side
    2,877.77x = 9,238,269.81
  5. Step 5: Solve for x
    x = 9,238,269.81/2,877.77
  6. Step 6: Final answer
    x = 3,210.22

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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.