Home / 4,659.68-6,989.76-4,426.40

Finding the Fourth Proportional to 4,659.68, 6,989.76 and 4,426.40

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Solution

The fourth proportional to 4,659.68, 6,989.76 and 4,426.40 is: 6,639.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,659.68 : 6,989.76 = 4,426.40 : x
  2. Step 2: Convert to fraction form
    4,659.68/6,989.76 = 4,426.40/x
  3. Step 3: Cross multiply
    4,659.68x = 6,989.76 × 4,426.40
  4. Step 4: Simplify right side
    4,659.68x = 30,939,473.66
  5. Step 5: Solve for x
    x = 30,939,473.66/4,659.68
  6. Step 6: Final answer
    x = 6,639.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.