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Finding the Fourth Proportional to 4,687.32, 7,031.38 and 1,914.18

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Solution

The fourth proportional to 4,687.32, 7,031.38 and 1,914.18 is: 2,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.32 : 7,031.38 = 1,914.18 : x
  2. Step 2: Convert to fraction form
    4,687.32/7,031.38 = 1,914.18/x
  3. Step 3: Cross multiply
    4,687.32x = 7,031.38 × 1,914.18
  4. Step 4: Simplify right side
    4,687.32x = 13,459,326.97
  5. Step 5: Solve for x
    x = 13,459,326.97/4,687.32
  6. Step 6: Final answer
    x = 2,871.43

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1.5x scale

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.