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Finding the Fourth Proportional to 7,062.94, 9,746.90 and 3,919.13

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Solution

The fourth proportional to 7,062.94, 9,746.90 and 3,919.13 is: 5,408.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,062.94 : 9,746.90 = 3,919.13 : x
  2. Step 2: Convert to fraction form
    7,062.94/9,746.90 = 3,919.13/x
  3. Step 3: Cross multiply
    7,062.94x = 9,746.90 × 3,919.13
  4. Step 4: Simplify right side
    7,062.94x = 38,199,368.20
  5. Step 5: Solve for x
    x = 38,199,368.20/7,062.94
  6. Step 6: Final answer
    x = 5,408.42

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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.