Home / 7,756.87-10,704.51-4,220.05

Finding the Fourth Proportional to 7,756.87, 10,704.51 and 4,220.05

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Solution

The fourth proportional to 7,756.87, 10,704.51 and 4,220.05 is: 5,823.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,756.87 : 10,704.51 = 4,220.05 : x
  2. Step 2: Convert to fraction form
    7,756.87/10,704.51 = 4,220.05/x
  3. Step 3: Cross multiply
    7,756.87x = 10,704.51 × 4,220.05
  4. Step 4: Simplify right side
    7,756.87x = 45,173,567.43
  5. Step 5: Solve for x
    x = 45,173,567.43/7,756.87
  6. Step 6: Final answer
    x = 5,823.68

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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.