Home / 4,989.60-7,484.40-2,648.70

Finding the Fourth Proportional to 4,989.60, 7,484.40 and 2,648.70

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Solution

The fourth proportional to 4,989.60, 7,484.40 and 2,648.70 is: 3,973.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989.60 : 7,484.40 = 2,648.70 : x
  2. Step 2: Convert to fraction form
    4,989.60/7,484.40 = 2,648.70/x
  3. Step 3: Cross multiply
    4,989.60x = 7,484.40 × 2,648.70
  4. Step 4: Simplify right side
    4,989.60x = 19,823,930.28
  5. Step 5: Solve for x
    x = 19,823,930.28/4,989.60
  6. Step 6: Final answer
    x = 3,973.05

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Similar ratio
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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.