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Finding the Fourth Proportional to 2,905.47, 4,358.17 and 714.22

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Solution

The fourth proportional to 2,905.47, 4,358.17 and 714.22 is: 1,071.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.47 : 4,358.17 = 714.22 : x
  2. Step 2: Convert to fraction form
    2,905.47/4,358.17 = 714.22/x
  3. Step 3: Cross multiply
    2,905.47x = 4,358.17 × 714.22
  4. Step 4: Simplify right side
    2,905.47x = 3,112,682.17
  5. Step 5: Solve for x
    x = 3,112,682.17/2,905.47
  6. Step 6: Final answer
    x = 1,071.32

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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.