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Finding the Fourth Proportional to 4,290.62, 5,917.20 and 2,945.62

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Solution

The fourth proportional to 4,290.62, 5,917.20 and 2,945.62 is: 4,062.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,290.62 : 5,917.20 = 2,945.62 : x
  2. Step 2: Convert to fraction form
    4,290.62/5,917.20 = 2,945.62/x
  3. Step 3: Cross multiply
    4,290.62x = 5,917.20 × 2,945.62
  4. Step 4: Simplify right side
    4,290.62x = 17,429,802.30
  5. Step 5: Solve for x
    x = 17,429,802.30/4,290.62
  6. Step 6: Final answer
    x = 4,062.30

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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.