Home / 2,190.56-3,023-1,246.40

Finding the Fourth Proportional to 2,190.56, 3,023 and 1,246.40

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Solution

The fourth proportional to 2,190.56, 3,023 and 1,246.40 is: 1,720.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.56 : 3,023 = 1,246.40 : x
  2. Step 2: Convert to fraction form
    2,190.56/3,023 = 1,246.40/x
  3. Step 3: Cross multiply
    2,190.56x = 3,023 × 1,246.40
  4. Step 4: Simplify right side
    2,190.56x = 3,767,867.20
  5. Step 5: Solve for x
    x = 3,767,867.20/2,190.56
  6. Step 6: Final answer
    x = 1,720.05

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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.