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Finding the Fourth Proportional to 2,920.72, 4,370.10 and 1,746.40

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Solution

The fourth proportional to 2,920.72, 4,370.10 and 1,746.40 is: 2,613.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.72 : 4,370.10 = 1,746.40 : x
  2. Step 2: Convert to fraction form
    2,920.72/4,370.10 = 1,746.40/x
  3. Step 3: Cross multiply
    2,920.72x = 4,370.10 × 1,746.40
  4. Step 4: Simplify right side
    2,920.72x = 7,631,942.64
  5. Step 5: Solve for x
    x = 7,631,942.64/2,920.72
  6. Step 6: Final answer
    x = 2,613.03

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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.