Home / 5,146.47-7,102.13-2,788.62

Finding the Fourth Proportional to 5,146.47, 7,102.13 and 2,788.62

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Solution

The fourth proportional to 5,146.47, 7,102.13 and 2,788.62 is: 3,848.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,146.47 : 7,102.13 = 2,788.62 : x
  2. Step 2: Convert to fraction form
    5,146.47/7,102.13 = 2,788.62/x
  3. Step 3: Cross multiply
    5,146.47x = 7,102.13 × 2,788.62
  4. Step 4: Simplify right side
    5,146.47x = 19,805,141.76
  5. Step 5: Solve for x
    x = 19,805,141.76/5,146.47
  6. Step 6: Final answer
    x = 3,848.30

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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.