Home / 3,870.56-5,341.48-2,102.28

Finding the Fourth Proportional to 3,870.56, 5,341.48 and 2,102.28

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Solution

The fourth proportional to 3,870.56, 5,341.48 and 2,102.28 is: 2,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.56 : 5,341.48 = 2,102.28 : x
  2. Step 2: Convert to fraction form
    3,870.56/5,341.48 = 2,102.28/x
  3. Step 3: Cross multiply
    3,870.56x = 5,341.48 × 2,102.28
  4. Step 4: Simplify right side
    3,870.56x = 11,229,286.57
  5. Step 5: Solve for x
    x = 11,229,286.57/3,870.56
  6. Step 6: Final answer
    x = 2,901.20

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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.