Home / 2,140.50-2,952.88-1,394.19

Finding the Fourth Proportional to 2,140.50, 2,952.88 and 1,394.19

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Solution

The fourth proportional to 2,140.50, 2,952.88 and 1,394.19 is: 1,923.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.50 : 2,952.88 = 1,394.19 : x
  2. Step 2: Convert to fraction form
    2,140.50/2,952.88 = 1,394.19/x
  3. Step 3: Cross multiply
    2,140.50x = 2,952.88 × 1,394.19
  4. Step 4: Simplify right side
    2,140.50x = 4,116,867.90
  5. Step 5: Solve for x
    x = 4,116,867.90/2,140.50
  6. Step 6: Final answer
    x = 1,923.32

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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.