Home / 2,628.10-3,615.60-2,555.20

Finding the Fourth Proportional to 2,628.10, 3,615.60 and 2,555.20

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Solution

The fourth proportional to 2,628.10, 3,615.60 and 2,555.20 is: 3,515.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.10 : 3,615.60 = 2,555.20 : x
  2. Step 2: Convert to fraction form
    2,628.10/3,615.60 = 2,555.20/x
  3. Step 3: Cross multiply
    2,628.10x = 3,615.60 × 2,555.20
  4. Step 4: Simplify right side
    2,628.10x = 9,238,581.12
  5. Step 5: Solve for x
    x = 9,238,581.12/2,628.10
  6. Step 6: Final answer
    x = 3,515.31

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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.