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Finding the Fourth Proportional to 4,885.59, 6,742.12 and 2,647.47

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Solution

The fourth proportional to 4,885.59, 6,742.12 and 2,647.47 is: 3,653.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,885.59 : 6,742.12 = 2,647.47 : x
  2. Step 2: Convert to fraction form
    4,885.59/6,742.12 = 2,647.47/x
  3. Step 3: Cross multiply
    4,885.59x = 6,742.12 × 2,647.47
  4. Step 4: Simplify right side
    4,885.59x = 17,849,553.82
  5. Step 5: Solve for x
    x = 17,849,553.82/4,885.59
  6. Step 6: Final answer
    x = 3,653.51

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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.