Home / 1,895.60-2,839.68-1,689.20

Finding the Fourth Proportional to 1,895.60, 2,839.68 and 1,689.20

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Solution

The fourth proportional to 1,895.60, 2,839.68 and 1,689.20 is: 2,530.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,895.60 : 2,839.68 = 1,689.20 : x
  2. Step 2: Convert to fraction form
    1,895.60/2,839.68 = 1,689.20/x
  3. Step 3: Cross multiply
    1,895.60x = 2,839.68 × 1,689.20
  4. Step 4: Simplify right side
    1,895.60x = 4,796,787.46
  5. Step 5: Solve for x
    x = 4,796,787.46/1,895.60
  6. Step 6: Final answer
    x = 2,530.49

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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.