Home / 2,660.16-3,989.70-2,528.40

Finding the Fourth Proportional to 2,660.16, 3,989.70 and 2,528.40

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Solution

The fourth proportional to 2,660.16, 3,989.70 and 2,528.40 is: 3,792.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.16 : 3,989.70 = 2,528.40 : x
  2. Step 2: Convert to fraction form
    2,660.16/3,989.70 = 2,528.40/x
  3. Step 3: Cross multiply
    2,660.16x = 3,989.70 × 2,528.40
  4. Step 4: Simplify right side
    2,660.16x = 10,087,557.48
  5. Step 5: Solve for x
    x = 10,087,557.48/2,660.16
  6. Step 6: Final answer
    x = 3,792.09

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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.