Home / 1,789.19-2,470.91-1,231.10

Finding the Fourth Proportional to 1,789.19, 2,470.91 and 1,231.10

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Solution

The fourth proportional to 1,789.19, 2,470.91 and 1,231.10 is: 1,700.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.19 : 2,470.91 = 1,231.10 : x
  2. Step 2: Convert to fraction form
    1,789.19/2,470.91 = 1,231.10/x
  3. Step 3: Cross multiply
    1,789.19x = 2,470.91 × 1,231.10
  4. Step 4: Simplify right side
    1,789.19x = 3,041,928.06
  5. Step 5: Solve for x
    x = 3,041,928.06/1,789.19
  6. Step 6: Final answer
    x = 1,700.17

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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.