Home / 5,146.40-7,102.06-2,788.56

Finding the Fourth Proportional to 5,146.40, 7,102.06 and 2,788.56

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Solution

The fourth proportional to 5,146.40, 7,102.06 and 2,788.56 is: 3,848.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,146.40 : 7,102.06 = 2,788.56 : x
  2. Step 2: Convert to fraction form
    5,146.40/7,102.06 = 2,788.56/x
  3. Step 3: Cross multiply
    5,146.40x = 7,102.06 × 2,788.56
  4. Step 4: Simplify right side
    5,146.40x = 19,804,513.46
  5. Step 5: Solve for x
    x = 19,804,513.46/5,146.40
  6. Step 6: Final answer
    x = 3,848.22

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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.