Home / 1,659.63-2,291.30-1,071.21

Finding the Fourth Proportional to 1,659.63, 2,291.30 and 1,071.21

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Solution

The fourth proportional to 1,659.63, 2,291.30 and 1,071.21 is: 1,478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659.63 : 2,291.30 = 1,071.21 : x
  2. Step 2: Convert to fraction form
    1,659.63/2,291.30 = 1,071.21/x
  3. Step 3: Cross multiply
    1,659.63x = 2,291.30 × 1,071.21
  4. Step 4: Simplify right side
    1,659.63x = 2,454,463.47
  5. Step 5: Solve for x
    x = 2,454,463.47/1,659.63
  6. Step 6: Final answer
    x = 1,478.92

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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.