Home / 7,639.68-10,540.08-4,805.76

Finding the Fourth Proportional to 7,639.68, 10,540.08 and 4,805.76

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Solution

The fourth proportional to 7,639.68, 10,540.08 and 4,805.76 is: 6,630.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.68 : 10,540.08 = 4,805.76 : x
  2. Step 2: Convert to fraction form
    7,639.68/10,540.08 = 4,805.76/x
  3. Step 3: Cross multiply
    7,639.68x = 10,540.08 × 4,805.76
  4. Step 4: Simplify right side
    7,639.68x = 50,653,094.86
  5. Step 5: Solve for x
    x = 50,653,094.86/7,639.68
  6. Step 6: Final answer
    x = 6,630.26

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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.