Home / 4,871.60-7,294.40-2,921.12

Finding the Fourth Proportional to 4,871.60, 7,294.40 and 2,921.12

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Solution

The fourth proportional to 4,871.60, 7,294.40 and 2,921.12 is: 4,373.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,871.60 : 7,294.40 = 2,921.12 : x
  2. Step 2: Convert to fraction form
    4,871.60/7,294.40 = 2,921.12/x
  3. Step 3: Cross multiply
    4,871.60x = 7,294.40 × 2,921.12
  4. Step 4: Simplify right side
    4,871.60x = 21,307,817.73
  5. Step 5: Solve for x
    x = 21,307,817.73/4,871.60
  6. Step 6: Final answer
    x = 4,373.88

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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.