Home / 1,812.02-2,719.40-1,326.32

Finding the Fourth Proportional to 1,812.02, 2,719.40 and 1,326.32

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Solution

The fourth proportional to 1,812.02, 2,719.40 and 1,326.32 is: 1,990.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.02 : 2,719.40 = 1,326.32 : x
  2. Step 2: Convert to fraction form
    1,812.02/2,719.40 = 1,326.32/x
  3. Step 3: Cross multiply
    1,812.02x = 2,719.40 × 1,326.32
  4. Step 4: Simplify right side
    1,812.02x = 3,606,787.98
  5. Step 5: Solve for x
    x = 3,606,787.98/1,812.02
  6. Step 6: Final answer
    x = 1,990.48

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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.