Home / 4,426.39-6,639.57-1,139.21

Finding the Fourth Proportional to 4,426.39, 6,639.57 and 1,139.21

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Solution

The fourth proportional to 4,426.39, 6,639.57 and 1,139.21 is: 1,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,426.39 : 6,639.57 = 1,139.21 : x
  2. Step 2: Convert to fraction form
    4,426.39/6,639.57 = 1,139.21/x
  3. Step 3: Cross multiply
    4,426.39x = 6,639.57 × 1,139.21
  4. Step 4: Simplify right side
    4,426.39x = 7,563,831.34
  5. Step 5: Solve for x
    x = 7,563,831.34/4,426.39
  6. Step 6: Final answer
    x = 1,708.80

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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.