Home / 2,127.90-2,936.64-1,196.40

Finding the Fourth Proportional to 2,127.90, 2,936.64 and 1,196.40

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Solution

The fourth proportional to 2,127.90, 2,936.64 and 1,196.40 is: 1,651.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.90 : 2,936.64 = 1,196.40 : x
  2. Step 2: Convert to fraction form
    2,127.90/2,936.64 = 1,196.40/x
  3. Step 3: Cross multiply
    2,127.90x = 2,936.64 × 1,196.40
  4. Step 4: Simplify right side
    2,127.90x = 3,513,396.10
  5. Step 5: Solve for x
    x = 3,513,396.10/2,127.90
  6. Step 6: Final answer
    x = 1,651.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.