Home / 2,025.80-3,038.70-1,685.60

Finding the Fourth Proportional to 2,025.80, 3,038.70 and 1,685.60

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Solution

The fourth proportional to 2,025.80, 3,038.70 and 1,685.60 is: 2,528.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,025.80 : 3,038.70 = 1,685.60 : x
  2. Step 2: Convert to fraction form
    2,025.80/3,038.70 = 1,685.60/x
  3. Step 3: Cross multiply
    2,025.80x = 3,038.70 × 1,685.60
  4. Step 4: Simplify right side
    2,025.80x = 5,122,032.72
  5. Step 5: Solve for x
    x = 5,122,032.72/2,025.80
  6. Step 6: Final answer
    x = 2,528.40

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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.