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Finding the Fourth Proportional to 1,714.31, 2,365.73 and 928.35

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Solution

The fourth proportional to 1,714.31, 2,365.73 and 928.35 is: 1,281.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,714.31 : 2,365.73 = 928.35 : x
  2. Step 2: Convert to fraction form
    1,714.31/2,365.73 = 928.35/x
  3. Step 3: Cross multiply
    1,714.31x = 2,365.73 × 928.35
  4. Step 4: Simplify right side
    1,714.31x = 2,196,225.45
  5. Step 5: Solve for x
    x = 2,196,225.45/1,714.31
  6. Step 6: Final answer
    x = 1,281.11

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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.