Home / 7,639.72-10,543.20-4,282.72

Finding the Fourth Proportional to 7,639.72, 10,543.20 and 4,282.72

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Solution

The fourth proportional to 7,639.72, 10,543.20 and 4,282.72 is: 5,910.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.72 : 10,543.20 = 4,282.72 : x
  2. Step 2: Convert to fraction form
    7,639.72/10,543.20 = 4,282.72/x
  3. Step 3: Cross multiply
    7,639.72x = 10,543.20 × 4,282.72
  4. Step 4: Simplify right side
    7,639.72x = 45,153,573.50
  5. Step 5: Solve for x
    x = 45,153,573.50/7,639.72
  6. Step 6: Final answer
    x = 5,910.37

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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.