Home / 7,742.81-10,685.12-4,206.08

Finding the Fourth Proportional to 7,742.81, 10,685.12 and 4,206.08

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Solution

The fourth proportional to 7,742.81, 10,685.12 and 4,206.08 is: 5,804.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.81 : 10,685.12 = 4,206.08 : x
  2. Step 2: Convert to fraction form
    7,742.81/10,685.12 = 4,206.08/x
  3. Step 3: Cross multiply
    7,742.81x = 10,685.12 × 4,206.08
  4. Step 4: Simplify right side
    7,742.81x = 44,942,395.07
  5. Step 5: Solve for x
    x = 44,942,395.07/7,742.81
  6. Step 6: Final answer
    x = 5,804.41

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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.