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Finding the Fourth Proportional to 2,697.42, 3,721.18 and 1,950.18

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Solution

The fourth proportional to 2,697.42, 3,721.18 and 1,950.18 is: 2,690.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,697.42 : 3,721.18 = 1,950.18 : x
  2. Step 2: Convert to fraction form
    2,697.42/3,721.18 = 1,950.18/x
  3. Step 3: Cross multiply
    2,697.42x = 3,721.18 × 1,950.18
  4. Step 4: Simplify right side
    2,697.42x = 7,256,970.81
  5. Step 5: Solve for x
    x = 7,256,970.81/2,697.42
  6. Step 6: Final answer
    x = 2,690.34

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Double scale
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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.