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Finding the Fourth Proportional to 7,689.90, 10,613.06 and 4,333.36

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Solution

The fourth proportional to 7,689.90, 10,613.06 and 4,333.36 is: 5,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689.90 : 10,613.06 = 4,333.36 : x
  2. Step 2: Convert to fraction form
    7,689.90/10,613.06 = 4,333.36/x
  3. Step 3: Cross multiply
    7,689.90x = 10,613.06 × 4,333.36
  4. Step 4: Simplify right side
    7,689.90x = 45,990,209.68
  5. Step 5: Solve for x
    x = 45,990,209.68/7,689.90
  6. Step 6: Final answer
    x = 5,980.60

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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.