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Finding the Fourth Proportional to 7,062.80, 9,746.24 and 3,919.44

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Solution

The fourth proportional to 7,062.80, 9,746.24 and 3,919.44 is: 5,408.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,062.80 : 9,746.24 = 3,919.44 : x
  2. Step 2: Convert to fraction form
    7,062.80/9,746.24 = 3,919.44/x
  3. Step 3: Cross multiply
    7,062.80x = 9,746.24 × 3,919.44
  4. Step 4: Simplify right side
    7,062.80x = 38,199,802.91
  5. Step 5: Solve for x
    x = 38,199,802.91/7,062.80
  6. Step 6: Final answer
    x = 5,408.59

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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.