Home / 3,871.83-5,345.70-2,973.97

Finding the Fourth Proportional to 3,871.83, 5,345.70 and 2,973.97

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Solution

The fourth proportional to 3,871.83, 5,345.70 and 2,973.97 is: 4,106.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.83 : 5,345.70 = 2,973.97 : x
  2. Step 2: Convert to fraction form
    3,871.83/5,345.70 = 2,973.97/x
  3. Step 3: Cross multiply
    3,871.83x = 5,345.70 × 2,973.97
  4. Step 4: Simplify right side
    3,871.83x = 15,897,946.04
  5. Step 5: Solve for x
    x = 15,897,946.04/3,871.83
  6. Step 6: Final answer
    x = 4,106.05

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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.