Home / 3,814.20-5,265.40-2,870.36

Finding the Fourth Proportional to 3,814.20, 5,265.40 and 2,870.36

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Solution

The fourth proportional to 3,814.20, 5,265.40 and 2,870.36 is: 3,962.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,814.20 : 5,265.40 = 2,870.36 : x
  2. Step 2: Convert to fraction form
    3,814.20/5,265.40 = 2,870.36/x
  3. Step 3: Cross multiply
    3,814.20x = 5,265.40 × 2,870.36
  4. Step 4: Simplify right side
    3,814.20x = 15,113,593.54
  5. Step 5: Solve for x
    x = 15,113,593.54/3,814.20
  6. Step 6: Final answer
    x = 3,962.45

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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.