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Finding the Fourth Proportional to 6,826.40, 9,416.16 and 4,306.40

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Solution

The fourth proportional to 6,826.40, 9,416.16 and 4,306.40 is: 5,940.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,826.40 : 9,416.16 = 4,306.40 : x
  2. Step 2: Convert to fraction form
    6,826.40/9,416.16 = 4,306.40/x
  3. Step 3: Cross multiply
    6,826.40x = 9,416.16 × 4,306.40
  4. Step 4: Simplify right side
    6,826.40x = 40,549,751.42
  5. Step 5: Solve for x
    x = 40,549,751.42/6,826.40
  6. Step 6: Final answer
    x = 5,940.14

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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.