Home / 7,621.78-10,515.15-4,636.48

Finding the Fourth Proportional to 7,621.78, 10,515.15 and 4,636.48

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Solution

The fourth proportional to 7,621.78, 10,515.15 and 4,636.48 is: 6,396.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.78 : 10,515.15 = 4,636.48 : x
  2. Step 2: Convert to fraction form
    7,621.78/10,515.15 = 4,636.48/x
  3. Step 3: Cross multiply
    7,621.78x = 10,515.15 × 4,636.48
  4. Step 4: Simplify right side
    7,621.78x = 48,753,282.67
  5. Step 5: Solve for x
    x = 48,753,282.67/7,621.78
  6. Step 6: Final answer
    x = 6,396.57

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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.