Home / 7,742.87-10,685.21-4,206.11

Finding the Fourth Proportional to 7,742.87, 10,685.21 and 4,206.11

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Solution

The fourth proportional to 7,742.87, 10,685.21 and 4,206.11 is: 5,804.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.87 : 10,685.21 = 4,206.11 : x
  2. Step 2: Convert to fraction form
    7,742.87/10,685.21 = 4,206.11/x
  3. Step 3: Cross multiply
    7,742.87x = 10,685.21 × 4,206.11
  4. Step 4: Simplify right side
    7,742.87x = 44,943,147.60
  5. Step 5: Solve for x
    x = 44,943,147.60/7,742.87
  6. Step 6: Final answer
    x = 5,804.46

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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.