Home / 1,815.90-2,496.21-1,637.70

Finding the Fourth Proportional to 1,815.90, 2,496.21 and 1,637.70

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Solution

The fourth proportional to 1,815.90, 2,496.21 and 1,637.70 is: 2,251.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.90 : 2,496.21 = 1,637.70 : x
  2. Step 2: Convert to fraction form
    1,815.90/2,496.21 = 1,637.70/x
  3. Step 3: Cross multiply
    1,815.90x = 2,496.21 × 1,637.70
  4. Step 4: Simplify right side
    1,815.90x = 4,088,043.12
  5. Step 5: Solve for x
    x = 4,088,043.12/1,815.90
  6. Step 6: Final answer
    x = 2,251.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.