Home / 2,639.55-3,959.50-1,528.28

Finding the Fourth Proportional to 2,639.55, 3,959.50 and 1,528.28

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Solution

The fourth proportional to 2,639.55, 3,959.50 and 1,528.28 is: 2,292.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.55 : 3,959.50 = 1,528.28 : x
  2. Step 2: Convert to fraction form
    2,639.55/3,959.50 = 1,528.28/x
  3. Step 3: Cross multiply
    2,639.55x = 3,959.50 × 1,528.28
  4. Step 4: Simplify right side
    2,639.55x = 6,051,217.88
  5. Step 5: Solve for x
    x = 6,051,217.88/2,639.55
  6. Step 6: Final answer
    x = 2,292.52

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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.