Home / 7,742.43-10,643.45-6,661.77

Finding the Fourth Proportional to 7,742.43, 10,643.45 and 6,661.77

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Solution

The fourth proportional to 7,742.43, 10,643.45 and 6,661.77 is: 9,157.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.43 : 10,643.45 = 6,661.77 : x
  2. Step 2: Convert to fraction form
    7,742.43/10,643.45 = 6,661.77/x
  3. Step 3: Cross multiply
    7,742.43x = 10,643.45 × 6,661.77
  4. Step 4: Simplify right side
    7,742.43x = 70,904,182.60
  5. Step 5: Solve for x
    x = 70,904,182.60/7,742.43
  6. Step 6: Final answer
    x = 9,157.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.