Home / 6,345.70-8,756.78-3,512.87

Finding the Fourth Proportional to 6,345.70, 8,756.78 and 3,512.87

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Solution

The fourth proportional to 6,345.70, 8,756.78 and 3,512.87 is: 4,847.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,345.70 : 8,756.78 = 3,512.87 : x
  2. Step 2: Convert to fraction form
    6,345.70/8,756.78 = 3,512.87/x
  3. Step 3: Cross multiply
    6,345.70x = 8,756.78 × 3,512.87
  4. Step 4: Simplify right side
    6,345.70x = 30,761,424.25
  5. Step 5: Solve for x
    x = 30,761,424.25/6,345.70
  6. Step 6: Final answer
    x = 4,847.60

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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.