Home / 1,418.10-2,127.15-1,322.10

Finding the Fourth Proportional to 1,418.10, 2,127.15 and 1,322.10

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Solution

The fourth proportional to 1,418.10, 2,127.15 and 1,322.10 is: 1,983.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.10 : 2,127.15 = 1,322.10 : x
  2. Step 2: Convert to fraction form
    1,418.10/2,127.15 = 1,322.10/x
  3. Step 3: Cross multiply
    1,418.10x = 2,127.15 × 1,322.10
  4. Step 4: Simplify right side
    1,418.10x = 2,812,305.02
  5. Step 5: Solve for x
    x = 2,812,305.02/1,418.10
  6. Step 6: Final answer
    x = 1,983.15

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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.