Home / 7,621.91-10,519.87-4,638.70

Finding the Fourth Proportional to 7,621.91, 10,519.87 and 4,638.70

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Solution

The fourth proportional to 7,621.91, 10,519.87 and 4,638.70 is: 6,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.91 : 10,519.87 = 4,638.70 : x
  2. Step 2: Convert to fraction form
    7,621.91/10,519.87 = 4,638.70/x
  3. Step 3: Cross multiply
    7,621.91x = 10,519.87 × 4,638.70
  4. Step 4: Simplify right side
    7,621.91x = 48,798,520.97
  5. Step 5: Solve for x
    x = 48,798,520.97/7,621.91
  6. Step 6: Final answer
    x = 6,402.40

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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.