Home / 2,127.12-2,935.92-1,420.08

Finding the Fourth Proportional to 2,127.12, 2,935.92 and 1,420.08

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Solution

The fourth proportional to 2,127.12, 2,935.92 and 1,420.08 is: 1,960.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.12 : 2,935.92 = 1,420.08 : x
  2. Step 2: Convert to fraction form
    2,127.12/2,935.92 = 1,420.08/x
  3. Step 3: Cross multiply
    2,127.12x = 2,935.92 × 1,420.08
  4. Step 4: Simplify right side
    2,127.12x = 4,169,241.27
  5. Step 5: Solve for x
    x = 4,169,241.27/2,127.12
  6. Step 6: Final answer
    x = 1,960.04

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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.