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Finding the Fourth Proportional to 1,461.58, 2,191.88 and 487.46

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Solution

The fourth proportional to 1,461.58, 2,191.88 and 487.46 is: 731.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461.58 : 2,191.88 = 487.46 : x
  2. Step 2: Convert to fraction form
    1,461.58/2,191.88 = 487.46/x
  3. Step 3: Cross multiply
    1,461.58x = 2,191.88 × 487.46
  4. Step 4: Simplify right side
    1,461.58x = 1,068,453.82
  5. Step 5: Solve for x
    x = 1,068,453.82/1,461.58
  6. Step 6: Final answer
    x = 731.03

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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.