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Finding the Fourth Proportional to 1,714.40, 2,570.04 and 891.71

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Solution

The fourth proportional to 1,714.40, 2,570.04 and 891.71 is: 1,336.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,714.40 : 2,570.04 = 891.71 : x
  2. Step 2: Convert to fraction form
    1,714.40/2,570.04 = 891.71/x
  3. Step 3: Cross multiply
    1,714.40x = 2,570.04 × 891.71
  4. Step 4: Simplify right side
    1,714.40x = 2,291,717.52
  5. Step 5: Solve for x
    x = 2,291,717.52/1,714.40
  6. Step 6: Final answer
    x = 1,336.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.