Home / 5,146.66-7,102.40-2,788.80

Finding the Fourth Proportional to 5,146.66, 7,102.40 and 2,788.80

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Solution

The fourth proportional to 5,146.66, 7,102.40 and 2,788.80 is: 3,848.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,146.66 : 7,102.40 = 2,788.80 : x
  2. Step 2: Convert to fraction form
    5,146.66/7,102.40 = 2,788.80/x
  3. Step 3: Cross multiply
    5,146.66x = 7,102.40 × 2,788.80
  4. Step 4: Simplify right side
    5,146.66x = 19,807,196.39
  5. Step 5: Solve for x
    x = 19,807,196.39/5,146.66
  6. Step 6: Final answer
    x = 3,848.55

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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.