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Finding the Fourth Proportional to 1,714.41, 2,365.90 and 928.47

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Solution

The fourth proportional to 1,714.41, 2,365.90 and 928.47 is: 1,281.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,714.41 : 2,365.90 = 928.47 : x
  2. Step 2: Convert to fraction form
    1,714.41/2,365.90 = 928.47/x
  3. Step 3: Cross multiply
    1,714.41x = 2,365.90 × 928.47
  4. Step 4: Simplify right side
    1,714.41x = 2,196,664.85
  5. Step 5: Solve for x
    x = 2,196,664.85/1,714.41
  6. Step 6: Final answer
    x = 1,281.29

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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.