Home / 1,815.02-2,489.65-1,799.40

Finding the Fourth Proportional to 1,815.02, 2,489.65 and 1,799.40

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Solution

The fourth proportional to 1,815.02, 2,489.65 and 1,799.40 is: 2,468.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.02 : 2,489.65 = 1,799.40 : x
  2. Step 2: Convert to fraction form
    1,815.02/2,489.65 = 1,799.40/x
  3. Step 3: Cross multiply
    1,815.02x = 2,489.65 × 1,799.40
  4. Step 4: Simplify right side
    1,815.02x = 4,479,876.21
  5. Step 5: Solve for x
    x = 4,479,876.21/1,815.02
  6. Step 6: Final answer
    x = 2,468.22

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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.