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Finding the Fourth Proportional to 7,696.12, 10,620 and 4,339.76

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Solution

The fourth proportional to 7,696.12, 10,620 and 4,339.76 is: 5,988.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,696.12 : 10,620 = 4,339.76 : x
  2. Step 2: Convert to fraction form
    7,696.12/10,620 = 4,339.76/x
  3. Step 3: Cross multiply
    7,696.12x = 10,620 × 4,339.76
  4. Step 4: Simplify right side
    7,696.12x = 46,088,251.20
  5. Step 5: Solve for x
    x = 46,088,251.20/7,696.12
  6. Step 6: Final answer
    x = 5,988.50

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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.